{"title":"Bellow","description":"","products":[{"product_id":"u-joint-bellows-kit-fits-mercruiser-alpha-one-gen-ii-drives-replaces-816431a1-18654a1-74639q02","title":"U-Joint Bellows Kit – Fits MerCruiser Alpha One Gen II Drives (Replaces 816431A1, 18654A1, 74639Q02)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eU-Joint Bellows Kit\u003c\/strong\u003e provides the essential components for servicing the transom assembly on MerCruiser Alpha One Gen II sterndrive units (1991–present). It is engineered to protect critical drivetrain components from water intrusion, ensuring long-lasting performance.\u003c\/p\u003e\n \u003cp\u003eIt serves as a direct replacement for MerCruiser part numbers 816431A1, 18654A1, and 74639Q02, as well as aftermarket equivalents including Sierra 18-2747, SBU 8M0124227, and GdlEpi GdlEpi63214.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eMade from durable, marine-grade rubber resistant to oil, gasoline, and saltwater.\u003c\/li\u003e\n \u003cli\u003eKit includes U-joint, exhaust, and a shift bellows for a complete service.\u003c\/li\u003e\n \u003cli\u003eEngineered for a direct, OEM-style fit to simplify installation.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket suppliers.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e18654A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e74639Q02\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2747\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSBU\u003c\/td\u003e\n \u003ctd\u003e8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGdlEpi\u003c\/td\u003e\n \u003ctd\u003eGdlEpi63214\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model and year in the table below to ensure correct fitment.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991–Present\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003ctd\u003eFor all Alpha One Gen II sterndrive applications\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement for specified MerCruiser drives\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eSecured with included stainless steel hose clamps\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e12.0 × 12.0 × 16.5 inches\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e1.76 ounces (49.9 g)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM-style fit\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eResistant to oil, grease, gasoline and water when installed with recommended adhesive\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Shift Bellows (\u003cspan style=\"color:#d0021b;\"\u003e74639Q02\u003c\/span\u003e)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows (\u003cspan style=\"color:#d0021b;\"\u003e18654A1\u003c\/span\u003e)\u003c\/li\u003e\n \u003cli\u003e1 x Universal Joint Bellows (\u003cspan style=\"color:#d0021b;\"\u003e816431A1\u003c\/span\u003e)\u003c\/li\u003e\n \u003cli\u003e1 x Sealing Gasket Kit (\u003cspan style=\"color:#d0021b;\"\u003e27-94996Q2\u003c\/span\u003e)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the engine is off and cool before beginning work.\u003c\/li\u003e\n \u003cli\u003eTrim the sterndrive unit to the full \"up\" or \"trailer\" position to access the transom assembly.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows, clamps, and any residual adhesive or gasket material.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the bell housing and transom assembly to ensure a clean seal.\u003c\/li\u003e\n \u003cli\u003eApply a suitable marine-grade bellows adhesive to the mounting grooves on both the drive and the new bellows.\u003c\/li\u003e\n \u003cli\u003eInstall the new U-joint, exhaust, and shift bellows, ensuring each is fully seated in its respective groove.\u003c\/li\u003e\n \u003cli\u003eSecure each bellows with the new stainless steel clamps provided, tightening them to the manufacturer's recommended torque specification.\u003c\/li\u003e\n \u003cli\u003eAfter installation, lower the sterndrive and inspect for proper alignment and a secure seal before operating the boat.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWill this fit my MerCruiser Alpha One Gen I drive?\u003c\/summary\u003e\n \u003cp\u003eNo, this kit is specifically designed for Alpha One Gen II sterndrives (1991–present). The components are not interchangeable with Gen I models.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my old bellows are failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include visible cracks, tears, or brittleness in the rubber. The most critical symptom of a failed U-joint bellows is finding water in the boat's bilge, which can lead to severe damage to the gimbal bearing and U-joints.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my sterndrive bellows?\u003c\/summary\u003e\n \u003cp\u003eAs a crucial part of preventative maintenance, bellows should be inspected annually for any signs of wear or damage. It is recommended to replace them every 3–5 years, depending on usage and environmental conditions (saltwater vs. freshwater).\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs special adhesive required for installation?\u003c\/summary\u003e\n \u003cp\u003eYes, using a high-quality marine bellows adhesive is essential to create a durable, waterproof seal. Not using the correct adhesive can lead to premature failure and water leaks.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDoes this kit include a gimbal bearing or other hardware?\u003c\/summary\u003e\n \u003cp\u003eNo, this kit contains the U-joint, exhaust, and shift bellows with their respective gaskets and clamps. The gimbal bearing and other transom service components must be purchased separately.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I just replace the one bellows that is leaking?\u003c\/summary\u003e\n \u003cp\u003eWhile technically possible, it is strongly recommended to replace all three bellows (U-joint, exhaust, shift) at the same time. They are exposed to the same conditions and have similar service lives, and the labor required to replace one is nearly the same as replacing all of them.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat’s the difference between OEM and aftermarket parts?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement component, not an OEM part. It is built to meet or exceed OEM-level specifications with comparable materials and manufacturing standards. Our parts are produced in an ISO 9002 facility and are batch-inspected for quality and consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow fast is shipping?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide, and typical transit time is 5–15 days for most regions. Standard shipping is free. Expedited shipping options, if available for your location, will be presented at checkout.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns of unused items in their original condition are accepted within our standard return window.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part before purchase. Do not install if anything differs, even if your model is listed as compatible.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation by a qualified marine mechanic is highly recommended for safety, performance, and to prevent damage.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions, with typical transit times of 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602577559867,"sku":"18654A1","price":53.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/18654A1_ed00072e-c79e-44ec-86fb-0425d72fb82f.jpg?v=1758594811"},{"product_id":"u-joint-bellows-fits-mercruiser-alpha-one-215-h-e-drives-replaces-36223a2","title":"U-Joint Bellows – Fits MerCruiser Alpha One, 215 H \u0026 E Drives (Replaces 36223A2)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis U-Joint Bellows is an essential component for protecting the u-joints on MerCruiser Alpha One, MR, R, and 215 H \u0026amp; E stern drives manufactured between 1967–1972 (serial numbers 2062141–3472477). It creates a durable, waterproof seal to prevent damage from water intrusion.\u003c\/p\u003e\n\u003cp\u003eThis part provides a direct interchange for Mercury\/Quicksilver 36223A2 and GLM 89040, ensuring a precise fit and function.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation is a direct replacement; use of bellows adhesive is recommended for a secure seal.\u003c\/li\u003e\n\u003cli\u003eKit includes the necessary stainless steel clamps for a complete installation.\u003c\/li\u003e\n\u003cli\u003eRequires an OEM hinge pin removal tool (part number 91-78310) for proper installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Quicksilver\u003c\/td\u003e\n \u003ctd\u003e36223A2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89040\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser applications, verify that your drive's serial number falls within the specified range (2062141–3472477).\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1967–1972\u003c\/td\u003e\n \u003ctd\u003e36223A2\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 2062141-3472477\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e215 H \u0026amp; E Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1967–1972\u003c\/td\u003e\n \u003ctd\u003e36223A2\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 2062141-3472477\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eMR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1967–1972\u003c\/td\u003e\n \u003ctd\u003e36223A2\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 2062141-3472477\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1967–1972\u003c\/td\u003e\n \u003ctd\u003e36223A2\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 2062141-3472477\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement with bellows adhesive recommended\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eStainless steel clamps included\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e18.0\" H x 18.0\" W x 18.0\" L\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eRequires OEM hinge pin removal tool (91-78310) for installation\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x U-Joint Bellows (36223A2)\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Stainless Steel Fixed Clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003ePosition the sterndrive in the full-up position and remove the rear cover to access the drive components.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the old clamps securing the existing u-joint bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully cut or slide the old bellows off the sterndrive and bell housing. Use of the OEM hinge pin removal tool (91-78310) will be necessary.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on both the drive and housing, removing any old adhesive or debris.\u003c\/li\u003e\n \u003cli\u003eApply a thin, even coat of a marine-grade bellows adhesive (not included) to both ends of the new bellows.\u003c\/li\u003e\n \u003cli\u003eSlide the new bellows into position and secure it tightly with the \u003cspan style=\"color:#d0021b;\"\u003etwo included stainless steel clamps\u003c\/span\u003e.\u003c\/li\u003e\n \u003cli\u003eAllow the adhesive to cure according to the manufacturer's instructions before reassembling the drive and aunching the vessel.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my U-joint bellows needs replacing?\u003c\/summary\u003e\u003cp\u003eInspect your bellows regularly for cracks, splits, or brittleness. The most common sign of failure is water inside the bellows, often discovered during a service check. Any visible damage warrants immediate replacement to prevent catastrophic damage to the u-joints and gimbal bearing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if a U-joint bellows fails?\u003c\/summary\u003e\u003cp\u003eA failed bellows allows water to enter the sterndrive's gimbal housing, quickly destroying the gimbal bearing and u-joints. This can lead to a total loss of propulsion and costly repairs. Water intrusion is a critical failure that should be addressed immediately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs bellows adhesive necessary for installation?\u003c\/summary\u003e\u003cp\u003eYes, using a quality marine bellows adhesive is highly recommended. It ensures a watertight seal between the bellows and the drive\/housing, preventing leaks that can lead to premature part failure. Do not rely on clamping force alone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\u003cp\u003eAs a preventative maintenance item, most manufacturers recommend replacing all sterndrive bellows, including the u-joint bellows, every 3-5 years, depending on usage (saltwater vs. freshwater) and storage conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this bellows fit my exact engine model?\u003c\/summary\u003e\u003cp\u003eThis part is designed for specific MerCruiser drives made from 1967–1972 with serial numbers between 2062141 and 3472477. Always use the compatibility table and verify your serial number and year range before purchasing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602577690939,"sku":"36223A2","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/36223A2_42c89da0-b3d2-41f1-b22c-ad98899a70e5.jpg?v=1758594813"},{"product_id":"u-joint-bellows-kit-fits-mercruiser-alpha-one-mc-i-r-mr-tr-trs-drives","title":"U-Joint Bellows Kit – Fits MerCruiser Alpha One, MC-I, R, MR \u0026 TR\/TRS Drives","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis U-Joint Bellows Kit provides a crucial seal between the transom and outdrive, protecting the universal joint from water and debris. It is designed for a wide range of MerCruiser stern drive models, including the MC-I, R, MR, Alpha One, and TR\/TRS series manufactured between 1972 and 1990.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury\/Quicksilver 60932A4 (which supersedes 60932A1), Sierra 18-2751, and GLM 89050.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct replacement for the original factory part.\u003c\/li\u003e\n\u003cli\u003eKit includes the rubber bellows and necessary hose clamps for a complete installation.\u003c\/li\u003e\n\u003cli\u003eEngineered to protect the driveshaft U-joint assembly on specified MerCruiser models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Quicksilver\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2751\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89050\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser models, this bellows fits a wide array of sterndrives from the 1970s and 1980s. Verify your specific model and year range to ensure correct fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMC-I\u003c\/td\u003e\n \u003ctd\u003e1972–1982\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e120\/140 (1.98 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e165 (1.65 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1978–1981\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e470\/485 (1.84 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e228 (1.50 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e260\/898 (1.50 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR\/MR\/Alpha One Sterndrive\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTR (2.00 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1977–1993\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTRS (1.50 RATIO)\u003c\/td\u003e\n \u003ctd\u003e1977–1993\u003c\/td\u003e\n \u003ctd\u003e60932A4\u003c\/td\u003e\n \u003ctd\u003eSupersedes 60932A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement for factory part\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eSecured with included hose clamps\u003c\/dd\u003e\n \u003cdt\u003ePackage Contents\u003c\/dt\u003e\n\u003cdd\u003eRubber bellows with hose clamps\u003c\/dd\u003e\n \u003cdt\u003eCompatibility\u003c\/dt\u003e\n\u003cdd\u003eMerCruiser MC-I, R, MR, Alpha One, TR\/TRS stern drives\u003c\/dd\u003e\n \u003cdt\u003eYear Range\u003c\/dt\u003e\n\u003cdd\u003e1972–1990\u003c\/dd\u003e\n \u003cdt\u003eInstallation Hardware\u003c\/dt\u003e\n\u003cdd\u003eIncludes hose clamps for both ends\u003c\/dd\u003e\n \u003cdt\u003eLocation\u003c\/dt\u003e\n\u003cdd\u003eLocated between transom and outdrive\u003c\/dd\u003e\n \u003cdt\u003eProduct Height\u003c\/dt\u003e\n\u003cdd\u003e15.5\u003c\/dd\u003e\n \u003cdt\u003eProduct Width\u003c\/dt\u003e\n\u003cdd\u003e15.0\u003c\/dd\u003e\n \u003cdt\u003eProduct Length\u003c\/dt\u003e\n\u003cdd\u003e15.0\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x U-Joint Bellows (Replaces 60932A4)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the engine is off, the drive is tilted up, and the battery is disconnected for safety.\u003c\/li\u003e\n\u003cli\u003eRemove the sterndrive assembly from the transom shield following the manufacturer's service manual procedures.\u003c\/li\u003e\n\u003cli\u003eLoosen and remove the old hose clamps securing the existing U-joint bellows.\u003c\/li\u003e\n\u003cli\u003eCarefully cut or pull the old bellows off the transom assembly and the sterndrive bell housing.\u003c\/li\u003e\n\u003cli\u003eClean both mounting surfaces thoroughly to remove old sealant, rubber, and any corrosion.\u003c\/li\u003e\n\u003cli\u003eApply a marine-grade adhesive or sealant to the mounting grooves.\u003c\/li\u003e\n\u003cli\u003eSlide the new bellows into position, ensuring it's properly seated on both ends.\u003c\/li\u003e\n\u003cli\u003eInstall and tighten the new hose clamps securely over the grooves on both ends of the bellows. Do not overtighten.\u003c\/li\u003e\n\u003cli\u003eCheck for a watertight seal before re-installing the sterndrive.\u003c\/li\u003e\n\u003cli\u003eRe-install the sterndrive, reconnect the battery, and test for proper function and leaks in the water.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if my U-joint bellows needs replacing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of a failing bellows include visible cracks, perishing rubber, or water inside your boat's bilge area near the transom. A leaking U-joint bellows can lead to catastrophic failure of the U-joints and gimbal bearing, so it should be inspected annually and replaced immediately if any damage is found.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWill this fit an Alpha One Gen 2 drive?\u003c\/summary\u003e\n \u003cp\u003eNo. This bellows kit is specifically for older MerCruiser drives, including the Alpha One (Gen 1) up to 1990. Gen 2 drives, which began production in 1991, use a different part number. Please verify your drive model and year before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval for this part?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance item, it is recommended to inspect bellows annually and replace them every 3-5 years, depending on usage (freshwater vs. saltwater) and storage conditions. Exposure to sun, heat, and chemicals can shorten its lifespan.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eAre the hose clamps included?\u003c\/summary\u003e\n \u003cp\u003eYes, this kit includes the necessary hose clamps to secure both ends of the bellows, ensuring a complete and secure installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat common tools are required for installation?\u003c\/summary\u003e\n \u003cp\u003eInstallation typically requires basic hand tools, such as socket wrenches, screwdrivers to remove the old clamps, a tool to clean the mounting surfaces, and a marine sealant applicator. You will also need the tools required to remove the sterndrive itself, as specified in your service manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePro-Grade Standards\u003c\/b\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFast Global Fulfillment\u003c\/b\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eManufacturer-Direct Value\u003c\/b\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602578411835,"sku":"60932A4","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/60932A4_c7f2f5ad-28b8-4369-bd0a-8e768827457a.jpg?v=1758594815"},{"product_id":"u-joint-bellows-kit-fits-mercruiser-alpha-one-gen-ii-replaces-816431a1","title":"U-Joint Bellows Kit – Fits MerCruiser Alpha One Gen II (Replaces 816431A1)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eU-Joint Bellows Kit – Fits MerCruiser Alpha One Gen II\u003c\/strong\u003e is a crucial replacement part for MerCruiser Alpha One Gen II drives manufactured in 1991 and newer (serial number D469859 and up). It is engineered to protect the vital u-joint and driveshaft assembly from water intrusion and corrosion.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct cross-reference for Mercury 816431A1, Sierra 18-2747, and GLM 89180, ensuring a perfect match for your maintenance needs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for direct OEM replacement to ensure proper fit and function.\u003c\/li\u003e\n\u003cli\u003eFeatures a robust worm gear clamp system for a secure, watertight seal.\u003c\/li\u003e\n\u003cli\u003eIncludes all essential components for a complete bellows replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2747\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89180\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1991 and newer\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003ctd\u003eFor serial number D469859 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eWorm gear clamp system\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber bellows with metal components\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e12.5\" H x 14.0\" W x 14.0\" L\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e27.2 g (0.96 oz)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint assembly\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor Alpha One Generation II 1991 and newer\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows Assembly (816431A1)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Grounding Clip (54-86049)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Worm Gear Clamp (54-815504372)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e1 x Bellows Sleeve (816607)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the outdrive is trimmed up and safely supported.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows, clamps, and grounding clip. Take note of the grounding clip's position.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the transom assembly and bell housing, removing any old sealant or debris.\u003c\/li\u003e\n \u003cli\u003eInspect the U-joints and gimble bearing for signs of wear, rust, or water damage before proceeding.\u003c\/li\u003e\n \u003cli\u003eSlide the new bellows sleeve and bellows onto the bell housing.\u003c\/li\u003e\n \u003cli\u003eInstall the new grounding clip in its correct position to prevent corrosion.\u003c\/li\u003e\n \u003cli\u003eAlign the bellows correctly and secure it tightly with the provided worm gear clamps, ensuring a watertight seal.\u003c\/li\u003e\n \u003cli\u003eDouble-check that the bellows is not twisted or pinched before lowering the drive.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if my U-joint bellows needs replacing?\u003c\/summary\u003e\n \u003cp\u003eVisible signs of a failing bellows include cracks, splits, dry rot, or stiffness in the rubber. The most critical sign is finding water inside the bellows during an inspection, which can lead to catastrophic U-joint and gimbal bearing failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval for this part?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect your U-joint bellows annually. As a preventative measure, most marine mechanics suggest replacement every 3-5 years, depending on usage (saltwater vs. freshwater) and storage conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I install this bellows kit myself?\u003c\/summary\u003e\n \u003cp\u003eWhile DIY installation is possible for experienced home mechanics with the right tools, professional installation is highly recommended. An improper seal can lead to major water damage to the drive components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the function of the included grounding clip?\u003c\/summary\u003e\n \u003cp\u003eThe grounding clip is a critical component that creates an electrical bond between drive parts. This helps prevent galvanic corrosion, which occurs when dissimilar metals are in contact in a marine environment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602578444603,"sku":"816431A1","price":52.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/816431A1_0c8d5215-be24-4f86-a6fa-55b5afe077c0.jpg?v=1758594817"},{"product_id":"u-joint-bellows-fits-mercruiser-bravo-blackhawk-stern-drives-replaces-86840a05-86840a3-8m0062406","title":"U-Joint Bellows – Fits MerCruiser Bravo \u0026 Blackhawk Stern Drives (Replaces 86840A05, 86840A3, 8M0062406)","description":"\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis U-Joint Bellows is designed for MerCruiser Bravo I, II, III (all variants) and Blackhawk stern drives manufactured between 1988 and 2009. It serves as a crucial component for protecting the universal joint from marine elements, ensuring drivetrain longevity and performance.\u003c\/p\u003e\n \u003cp\u003eIt is a direct replacement for MerCruiser\/Mercury part numbers 86840A05, 86840A3, and 8M0062406, as well as Sierra 18-2756 and OMC\/Johnson\/Evinrude 0775490.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eEngineered for direct replacement and easy installation.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable, marine-grade rubber to resist saltwater and UV damage.\u003c\/li\u003e\n \u003cli\u003eKit typically includes essential hardware like an aluminum ring and stainless steel clamp.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n \u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n \u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n table.ss-table th {\n white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc;\n }\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n \u003c\/style\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser \/ Mercury\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2756\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC \/ Johnson \/ Evinrude\u003c\/td\u003e\n \u003ctd\u003e0775490\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model and year in the table below.\u003c\/p\u003e\n \u003cp\u003eFor MerCruiser\/Mercury, this bellows fits Bravo and Blackhawk models as specified.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo One\u003c\/td\u003e\n \u003ctd\u003e1988–1998\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo Two\u003c\/td\u003e\n \u003ctd\u003e1988–1998\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo Three\u003c\/td\u003e\n \u003ctd\u003e1988–1998\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo XR\/XZ\u003c\/td\u003e\n \u003ctd\u003e1998–2009\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eIntegrated Transom\u003c\/td\u003e\n \u003ctd\u003e1998–2009\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003e1994–1995\u003c\/td\u003e\n \u003ctd\u003e86840A05, 86840A3, 8M0062406\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber\u003c\/dd\u003e\n \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n\u003cdd\u003e16.5\" L x 15.5\" W x 15.5\" H\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (varies by brand)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes aluminum ring and stainless steel clamp (varies by brand)\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Bellows\u003c\/li\u003e\n \u003cli\u003e1 x Aluminum Ring\u003c\/li\u003e\n \u003cli\u003e1 x Stainless Clamp\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eTrim the stern drive to the full up\/trailer position and disconnect the battery.\u003c\/li\u003e\n \u003cli\u003eRemove the stern drive assembly from the bell housing according to the manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eCarefully cut and remove the old clamps and the damaged u-joint bellows.\u003c\/li\u003e\n \u003cli\u003eClean the mounting surfaces on the bell housing and stern drive thoroughly.\u003c\/li\u003e\n \u003cli\u003eInstall the new aluminum ring and bellows, ensuring a snug fit.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellows with the provided stainless steel clamps, tightening them to the specified torque.\u003c\/li\u003e\n \u003cli\u003eInspect the installation for proper sealing and alignment.\u003c\/li\u003e\n \u003cli\u003eReinstall the stern drive assembly, reconnect the battery, and test for leaks.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if my U-joint bellows is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include visible cracks or splits in the rubber, water inside the bellows (which can lead to catastrophic u-joint failure), or a grinding noise from the transom area during operation.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I install this part myself?\u003c\/summary\u003e\n \u003cp\u003eWhile DIY installation is possible for experienced mechanics, it requires removing the stern drive. We recommend professional installation to ensure proper sealing and prevent damage to the drivetrain.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should a U-joint bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect bellows annually and replace them every 3–5 years, or immediately if any signs of wear, cracking, or damage are found. This is a critical preventative maintenance item.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWill this fit a Bravo X drive?\u003c\/summary\u003e\n \u003cp\u003eYes, this bellows is listed as compatible with Bravo XR and XZ models from 1998 to 2009. Always double-check your specific OEM part number against our Part Number Matrix.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this part the same as the exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eNo. This is the U-joint (drive shaft) bellows, which protects the drivetrain. The exhaust bellows is a separate part that carries exhaust gases. Ensure you are ordering the correct bellows for your needs.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition).\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602578542907,"sku":"86840A05","price":33.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/86840A05_060afd82-7e94-4a35-ba9f-d4807e700f30.jpg?v=1758594818"},{"product_id":"universal-joint-bellows-kit-fits-volvo-penta-dp-dpx-sx-drives-replaces-876294","title":"Universal Joint Bellows Kit – Fits Volvo Penta DP, DPX, SX Drives (Replaces 876294)","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n table.ss-table th {\n white-space:nowrap;\n word-break:normal;\n letter-spacing:normal;\n font-weight:600;\n background:#f8fafc;\n }\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eUniversal Joint Bellows Kit\u003c\/strong\u003e is designed for a wide range of Volvo Penta Marine sterndrive and engine applications from 1986 to the present, including DP, DPX, SP, and SX drives, as well as KAD, KAMD, AD, TAMD, and TMD engine series.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Volvo Penta part numbers 876294, 875826, 875256, and 897637, and interchanges with Sierra 18-2744.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls on the sterndrive U-Joint.\u003c\/li\u003e\n\u003cli\u003eConnects to the drive shaft.\u003c\/li\u003e\n\u003cli\u003eIncludes essential stainless steel clamps for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e875826\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e875256\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e897637\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-2744\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta applications, check your drive or engine series against the listed models to ensure proper fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e230A, 230B, 250A, 250B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270 DP-C1, 280 DP-D1, 285 DP-E\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290 DP-G, 275A DPH, 290A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPR, DP280 DPX-A, DP290A DPX-R\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-A DPX-S, DP-B SP-A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eKAD42P-A, KAMD42P-A, DPX, HS1A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D1, DP-E, DP-G\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e430A, 430B, 431A, 431B, 432A, 434A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e500B, 501B, 570A, 572A, 740B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD31L-A, AD31P-A, AD41L-A, AD41P-A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD41L-A, TAMD31L-A, TAMD31M-A, TAMD31P-A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD31S-A, TAMD41H-A, TAMD41H-B, TAMD41P-A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD41L, DPX-A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-E, SP-E\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eMD31A, TMD31A, TMD31B, TAMD31A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD31B, AQAD31A, AD31A, AD31B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTMD41A, TMD41B, D41A, D41B, TAMD41A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD41B, AQAD41A, AD41A, AD41B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eKAD42A, KAMD42A, DP-D, HS1A, MS5B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD31D, AD31XD, TAMD31D, TMD31D\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD41D, D41D, TAMD41D, TMD41D\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D1, DP-E, DP-S, DPX, SP-C1, HS1A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eKAD42B, KAMD42B, TAMD42B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-R, DPX-R 1.47, DPX-R 1.51, DPX-R 1.59\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-R 1.68, DPX-R 1.78\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-S 1.59, DPX-S 1.68, DPX-S 1.78\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-S1 1.59, DPX-S1 1.68, DPX-S1 1.78\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-C\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-C1, DP-D1, DP-S\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-C1 1.95, DP-C1 2.30, DP-D1 1.68\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D1 1.78, DP-D1 1.95, DP-D1 2.30\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eNC PJX-C, PJX-S, SX-C1, SX-CT1, SX-RT1\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\ntr\u0026gt;\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-S, DP-C1, DP-D1, DPX-S, HS1A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eLK Drives, PJX-C, PJX-C1, SX-C1, SX-CT1\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-RT1, DPS, DP-S1, DP-C1, DP-D1, DPX-S1\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eHS1A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eWT Drives, PJX-C, PJX-S, SX-M\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-MACLT, SX-MDA, SX-MDB, SX-MHP, SX-MLT\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-MTD, DP-E, DP-S, DP-S1, DP-S2\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-SM, DP-SM\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eEF Drives, BY Drives\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eIPS400, IPS500, HS25A-A, HS45A-A, HS45AE\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eHS63AE, HS63VE, HS80AE, HS80VE\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eMS10A-B, MS10L-B, MS15A-B, MS15L-B\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eMS25A-A, MS25L-A\u003c\/td\u003e\n\u003ctd\u003e876294\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eUniversal Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eSterndrive U-Joint\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDrive Shaft\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n\u003cdd\u003e16.0 x 14.5 x 14.5 inches\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e1.11 pounds (0.503 kg)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint\/Drive Shaft\u003c\/dd\u003e\n \u003cdt\u003eIncluded Hardware\u003c\/dt\u003e\n\u003cdd\u003eIncludes stainless steel clamps\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows Kit (Replaces 876294)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003eStainless Steel Clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the drive is in a safe, accessible position. Disconnect the battery for safety.\u003c\/li\u003e\n \u003cli\u003eRemove the old bellows and any existing clamps. Thoroughly clean the mounting surfaces on the drive and transom assembly.\u003c\/li\u003e\n \u003cli\u003eInspect the U-joint and surrounding components for wear or damage. Replace any worn parts as needed.\u003c\/li\u003e\n \u003cli\u003eSlide the new bellows into position over the U-joint assembly.\u003c\/li\u003e\n \u003cli\u003eSecure both ends of the bellows with the provided stainless steel clamps. Ensure clamps are tight and create a waterproof seal.\u003c\/li\u003e\n \u003cli\u003eDouble-check the alignment and seating of the bellows. Lower the drive and check for leaks before operating the vessel.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my U-joint bellows needs replacing?\u003c\/summary\u003e\u003cp\u003eInspect your bellows regularly for cracks, splits, or signs of dry rot. Water inside the bellows is a clear indicator of failure. A leaking bellows can lead to catastrophic U-joint and bearing failure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the recommended replacement interval for this part?\u003c\/summary\u003e\u003cp\u003eU-joint bellows are a critical maintenance item. It is generally recommended to inspect them annually and replace them every 3–5 years, or immediately if any damage is found, regardless of age.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this kit fit my specific Volvo Penta drive model?\u003c\/summary\u003e\u003cp\u003eThis kit is designed for a wide range of Volvo Penta drives, including DP, DPX, and SX series. Please consult the 'Engine \u0026amp; Model Compatibility' table on this page to confirm your specific model is listed.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the clamps included with this kit marine-grade?\u003c\/summary\u003e\u003cp\u003eYes, the kit includes stainless steel clamps designed for use in marine environments to resist corrosion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if I don't replace a faulty bellows?\u003c\/summary\u003e\u003cp\u003eA failed bellows will allow water to enter the drive, quickly destroying the U-joints, gimbal bearing, and other critical components. This can result in an expensive and time-consuming repair.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs any special tool required for installation?\u003c\/summary\u003e\u003cp\u003eWhile standard hand tools can be used, a bellows clamp tool can make it easier to properly tension the clamps. A bellows expander tool can also simplify stretching the bellows over the drive housing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50610200805691,"sku":"876294","price":79.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/876294_8380198e-953e-4047-a068-eb33093c62cd.jpg?v=1758940447"},{"product_id":"exhaust-bellows-kit-fits-volvo-penta-sterndrive-290-sp-dp-series-replaces-876633","title":"Exhaust Bellows Kit – Fits Volvo Penta Sterndrive 290, SP, DP Series (Replaces 876633)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis genuine Volvo Penta \u003cstrong\u003eExhaust Bellows Kit – Fits Volvo Penta Sterndrive 290, SP, DP Series (Replaces 876633)\u003c\/strong\u003e provides a watertight seal between the exhaust components on various Volvo Penta sterndrive systems. It is designed for Volvo Penta 290, SP, DP, DPX, and related sterndrive models from the AQ series, ensuring reliable performance and protection against water intrusion.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Volvo Penta part number 876633.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for direct replacement, simplifying installation.\u003c\/li\u003e\n\u003cli\u003eMade from durable rubber to withstand the marine environment.\u003c\/li\u003e\n\u003cli\u003eIncludes essential clamps and mounting hardware for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e290\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e290DP\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSP\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDPX\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ Series\u003c\/td\u003e\n \u003ctd\u003e876633\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eFits between exhaust components on sterndrive\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n\u003cdd\u003e11.5\" L x 11.5\" W x 15.0\" H\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.82 kg (1.8 lbs)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eSterndrive exhaust connection\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes clamps and mounting hardware\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Exhaust Bellows Kit with Flaps (Replaces 876633)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and ensure the engine is off and cool.\u003c\/li\u003e\n\u003cli\u003eTilt the sterndrive to the full \"trailer\" position to access the exhaust bellows.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old clamps and cut away the old bellows if necessary.\u003c\/li\u003e\n\u003cli\u003eThoroughly clean the mounting surfaces on the drive and transom assembly.\u003c\/li\u003e\n\u003cli\u003ePosition the new bellows over the connections, ensuring it is seated correctly.\u003c\/li\u003e\n\u003cli\u003eSecure the bellows with the new clamps provided in the kit, tightening them firmly.\u003c\/li\u003e\n\u003cli\u003eLower the sterndrive and inspect the seal for any gaps or a poor fit.\u003c\/li\u003e\n\u003cli\u003eOnce installed, run the engine and check for any exhaust or water leaks around the new bellows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if this exhaust bellows will fit my Volvo Penta sterndrive?\u003c\/summary\u003e\n\u003cp\u003eThis kit is a direct replacement for OEM part number 876633. It is compatible with Volvo Penta sterndrive models including the 290, 290DP, SP, DP, DPX, and various AQ series drives. Always verify your part number and compare our product photos with your existing part before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the common signs of a failing exhaust bellows?\u003c\/summary\u003e\n\u003cp\u003eSymptoms of a worn or damaged exhaust bellows include visible cracks or splits in the rubber, water leaking into the bilge area, and an unusually loud exhaust sound, as gases may escape before exiting through the propeller hub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often should I replace my sterndrive's exhaust bellows?\u003c\/summary\u003e\n\u003cp\u003eExhaust bellows should be inspected annually for signs of wear, such as cracking, stiffness, or holes. A common service interval for replacement is every 3-5 years, but this can vary based on usage, water conditions (salt vs. fresh), and UV exposure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I install this exhaust bellows kit myself?\u003c\/summary\u003e\n\u003cp\u003eWhile DIY installation is possible for those with mechanical experience, we recommend professional installation. A proper seal is critical to prevent water from entering the vessel. The process requires tilting the heavy sterndrive and ensuring the clamps are torqued correctly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between an exhaust bellows and a u-joint bellows?\u003c\/summary\u003e\n\u003cp\u003eThe exhaust bellows provides a sealed passage for engine exhaust to exit through the sterndrive. The u-joint (or universal joint) bellows protects the critical u-joints and driveshaft from water intrusion. They are separate components and must both be in good condition for safe operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50610200838459,"sku":"876633","price":189.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/876633_bcbd6236-2970-4128-9df6-1aac15170dc0.jpg?v=1758940448"},{"product_id":"bellows-kit-fits-volvo-penta-dph-a-drive-replaces-21132674","title":"Bellows Kit – Fits Volvo Penta DPH-A Drive (Replaces 21132674)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis is an aftermarket \u003cstrong\u003eBellows Kit – Fits Volvo Penta DPH-A Drive (Replaces 21132674)\u003c\/strong\u003e, designed for use in the steering system of Volvo Penta DPH-A drive applications. It provides a reliable seal to protect critical steering components from water intrusion and environmental damage.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Volvo Penta OEM part number 21132674.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecifically designed for the DPH-A drive steering system.\u003c\/li\u003e\n\u003cli\u003eHelps protect internal steering components from corrosion and wear.\u003c\/li\u003e\n\u003cli\u003eKit includes essential components for a complete replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e21132674\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis bellows kit is engineered for specific Volvo Penta sterndrive models. Please verify your drive model to ensure proper fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDPH-A\u003c\/td\u003e\n \u003ctd\u003e21132674\u003c\/td\u003e\n \u003ctd\u003eFor steering system application\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eBellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDPH-A \/ Steering System\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e8.0\" H x 12.0\" W x 24.5\" L\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eSchematic Object Key: 20\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Bellows (40005175)\u003c\/li\u003e\n \u003cli\u003e1 x Cable Tie (948211)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the vessel's battery and ensure the sterndrive is trimmed to a safe, accessible position.\u003c\/li\u003e\n \u003cli\u003eRefer to your official Volvo Penta service manual for detailed instructions on accessing the steering system components.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old steering bellows, cutting the old cable tie or clamp if necessary.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the drive to ensure a clean, debris-free seal.\u003c\/li\u003e\n \u003cli\u003eInspect the new bellows for any damage before installation.\u003c\/li\u003e\n \u003cli\u003eFit the new bellows into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n \u003cli\u003eSecure the bellows firmly with the new cable tie provided in the kit.\u003c\/li\u003e\n \u003cli\u003eOnce installed, turn the steering from lock to lock to confirm the bellows moves freely without binding or pinching.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery and test all functions before returning the vessel to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows kit fits my Volvo Penta drive?\u003c\/summary\u003e\n \u003cp\u003eThis kit is specifically designed for the steering systems on Volvo Penta DPH-A drives. It is a direct aftermarket replacement for OEM part 21132674. Always confirm your drive model and required part number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing steering bellows?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks, splits, perishing rubber, or marine growth on the bellows. Functionally, a failed bellows can lead to water intrusion, causing stiff steering, grinding noises, or eventual seizure of steering components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the steering bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect the steering bellows annually during routine maintenance. As a preventative measure, replacement is advised every 3-5 years, depending on usage and environmental conditions (e.g., saltwater vs. freshwater).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this kit for the exhaust or the steering system?\u003c\/summary\u003e\n \u003cp\u003eThis is a steering system bellows kit. It is not designed for the exhaust or U-joint\/driveshaft applications, which require different parts with distinct specifications.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50610200871227,"sku":"21132674","price":160.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21132674_3218375f-d9fa-4533-8cce-87a2c66407fd.jpg?v=1758940450"},{"product_id":"u-joint-bellows-kit-fits-volvo-penta-sx-dp-outdrives-replaces-23075752-22197130","title":"U-Joint Bellows Kit – Fits Volvo Penta SX\/DP Outdrives (Replaces 23075752, 22197130)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis aftermarket \u003cstrong\u003eU-Joint Bellows Kit\u003c\/strong\u003e is designed as a direct replacement for Volvo Penta SX and DP series outdrives, including SX-S, SX-C, SX-R, SX-M, SX-A, DP-S, DP-S1, and DP-SM models manufactured from 1986 and later. It protects the critical u-joint assembly from water intrusion and corrosion.\u003c\/p\u003e\n \u003cp\u003eIt serves as a direct interchange for Volvo Penta part numbers 23075752, 22197130, 3841481, and 3854127, as well as OMC part numbers 983973 and 987467.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eEngineered for direct replacement to ensure proper fit and function.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable rubber to withstand the harsh marine environment.\u003c\/li\u003e\n \u003cli\u003eThe kit includes the necessary hose clamp for a secure installation.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket suppliers.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eCurrent primary part number.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e22197130\u003c\/td\u003e\n \u003ctd\u003eSuperseded by 23075752.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3841481\u003c\/td\u003e\n \u003ctd\u003eSuperseded by 23075752.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3854127\u003c\/td\u003e\n \u003ctd\u003eInterchangeable. Also used by OMC.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e983973\u003c\/td\u003e\n \u003ctd\u003eInterchangeable.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e987467\u003c\/td\u003e\n \u003ctd\u003eInterchangeable.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eFits a wide range of Volvo Penta SX and DP series sterndrives manufactured since 1986.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-S\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-C\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-R\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-M\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-A\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S1\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-SM\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eReplaces 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003cp\u003eAlso compatible with OMC Cobra models from 1986 onwards, which share the same platform.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"OMC Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003e1986 and Later\u003c\/td\u003e\n \u003ctd\u003e983973\/987467\u003c\/td\u003e\n \u003ctd\u003eSuperseded by Volvo part numbers after acquisition.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eU-Joint (Universal Joint)\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e20 x 20 x 20\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eHose clamp connection\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes hose clamp and installation instructions\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (Replaces 23075752)\u003c\/li\u003e\n \u003cli\u003e1 x Hose Clamp\u003c\/li\u003e\n \u003cli\u003e1 x Installation Instructions\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eSafely secure the vessel and trim the outdrive to the full \"trailer\" or up position. Disconnect the battery.\u003c\/li\u003e\n \u003cli\u003eLocate and loosen the clamps on the old U-joint bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully cut or pry the old bellows away from the transom shield and the outdrive.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean both mounting surfaces to remove any old adhesive, sealant, or debris.\u003c\/li\u003e\n \u003cli\u003eApply a suitable marine adhesive (not included) to the mounting surfaces if recommended for your model.\u003c\/li\u003e\n \u003cli\u003eSlide the new bellows into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n \u003cli\u003eSecurely tighten the new hose clamp. Do not over-tighten.\u003c\/li\u003e\n \u003cli\u003eLower the outdrive, reconnect the battery, and check for any signs of leaks before operating the vessel.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows kit fits my outdrive?\u003c\/summary\u003e\n \u003cp\u003eThis kit is specifically for Volvo Penta SX and DP series drives, plus OMC Cobras, from 1986 onwards. The best way to confirm is to cross-reference your existing part number with those listed in our Part Number Matrix (e.g., 23075752, 22197130, 3854127, 983973).\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing U-joint bellows?\u003c\/summary\u003e\n \u003cp\u003eVisible cracks, splitting, or holes in the rubber are clear signs of failure. Another common symptom is finding water or a milky, emulsified oil inside the bellows area upon inspection, which indicates a leak that is compromising your U-joints and gimble bearing.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should the U-joint bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eMost manufacturers recommend inspecting bellows annually and replacing them every 3-5 years as preventative maintenance, or immediately if any signs of wear or damage are found. Climate and usage (saltwater vs. freshwater) can affect lifespan.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs any special tool required for installation?\u003c\/summary\u003e\n \u003cp\u003eBasic hand tools, including a screwdriver or socket for the hose clamp, are typically sufficient. A tool to remove the old bellows and a scraper for cleaning surfaces are also helpful. Some mechanics use a bellows expansion tool, but it is not strictly necessary.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50610200903995,"sku":"22197130","price":79.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/22197130_64eeb671-0e34-4d0f-a864-4230527b7488.jpg?v=1758940451"},{"product_id":"exhaust-bellows-kit-fits-volvo-penta-sterndrives-replaces-876631","title":"Exhaust Bellows Kit – Fits Volvo Penta Sterndrives (Replaces 876631)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eExhaust Bellows Kit\u003c\/strong\u003e is a direct replacement part designed for a wide range of Volvo Penta sterndrive units. It is compatible with the 200, 250, 270, 280, 290, and DP series drives.\u003c\/p\u003e\n\u003cp\u003eIt serves as an aftermarket equivalent for Volvo Penta OEM part number 876631 and aftermarket replacement 876631-R.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct replacement for the original part.\u003c\/li\u003e\n\u003cli\u003eConnects the sterndrive to the transom assembly.\u003c\/li\u003e\n\u003cli\u003eMade from durable rubber\/neoprene to withstand the marine environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e876631\u003c\/td\u003e\n \u003ctd\u003eOEM Reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAftermarket\u003c\/td\u003e\n \u003ctd\u003e876631-R\u003c\/td\u003e\n \u003ctd\u003eNo flap design\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis exhaust bellows is compatible with the following Volvo Penta sterndrive models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e200C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e200D\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e250C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e250D\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270B\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270D\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270SP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270T\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e275\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e275A\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280B\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280D\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280DP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280E\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280PT\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280SP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280T\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280T-DP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290-DP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290A\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290A-DP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290B\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290D\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290SP\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290SP-A\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-A\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-A1\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-A2\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-B\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-B1\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-C1\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D1\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D2\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-E\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-R\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPX-S\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-A\/MT\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-A1\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-A2\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-C\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-E\u003c\/td\u003e\n\u003ctd\u003e876631\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect Replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDrive to Transom Assembly\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n\u003cdd\u003eLength: 16.0, Width: 16.0, Height: 15.0\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eDirect Fit\u003c\/dd\u003e\n \u003cdt\u003eOther Attributes\u003c\/dt\u003e\n\u003cdd\u003eNo flap design (for 876631-R aftermarket version)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the sterndrive is in a safe, accessible position. Document or mark the orientation of the old bellows.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the clamps securing the old exhaust bellows to the transom assembly and the sterndrive.\u003c\/li\u003e\n \u003cli\u003eCarefully detach and remove the old, worn bellows. Clean the mounting surfaces on both the drive and transom to ensure a good seal.\u003c\/li\u003e\n \u003cli\u003ePosition the new exhaust bellows, aligning it correctly. Slide it onto the drive and transom assembly connections.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellows with the provided or new clamps. Tighten them firmly but avoid over-tightening to prevent damage to the rubber.\u003c\/li\u003e\n \u003cli\u003eAfter installation, check for a secure fit and proper alignment. Run the engine and inspect for any exhaust leaks around the connections.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this bellows fits my sterndrive?\u003c\/summary\u003e\u003cp\u003eThis kit is designed for Volvo Penta 200-290 and DP series drives. Please consult the 'Engine \u0026amp; Model Compatibility' table on this page and cross-reference your model number. It directly replaces OEM part 876631.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between this part and the OEM version?\u003c\/summary\u003e\u003cp\u003eFunctionally, it performs the same as the OEM part. The primary material is a durable rubber\/neoprene blend designed for marine use. The aftermarket version 876631-R noted in the interchange list comes without an internal exhaust flap.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should an exhaust bellows be replaced?\u003c\/summary\u003e\u003cp\u003eExhaust bellows are a regular wear item. We recommend inspecting them annually for cracks, splits, or brittleness. Replacement intervals can vary from every 2-5 years depending on usage (freshwater vs. saltwater) and exposure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing exhaust bellows?\u003c\/summary\u003e\u003cp\u003eCommon signs include visible cracks or holes in the rubber, water leaking into the bilge area, and an unusually loud exhaust noise from the stern of the boat, as exhaust gases may escape before exiting through the propeller hub.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part or aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement part, not an OEM component. It is engineered to meet or exceed original equipment specifications, using comparable high-quality materials. Our parts are produced in an ISO 9002 certified facility and are batch-inspected to ensure consistent quality and performance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast do you ship and what does it cost?\u003c\/summary\u003e\u003cp\u003eWe provide fast worldwide shipping, with typical transit times of 5–15 days for most regions. Standard shipping is free on all orders. Expedited shipping options, if available for your location, will be presented at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under conditions of normal use. If you encounter an issue, please contact our support team with your order number. Returns are accepted within our standard return window for items that are unused and in their original packaging. Please see our full policy page or contact us for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images and specifications against your original part before purchase. If anything differs—even if your model is listed as compatible—do not complete the purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement component and is not sourced from the original equipment manufacturer (OEM).\u003c\/li\u003e\n\u003cli\u003eFor safety and optimal performance, professional installation by a qualified marine mechanic is strongly recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards:\u003c\/strong\u003e We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability in marine environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment:\u003c\/strong\u003e We offer free standard delivery to most regions, with typical transit times of just 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value:\u003c\/strong\u003e By sourcing directly, we provide fair pricing without ever compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50610200936763,"sku":"876631","price":31.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/876631_86589ed2-d73c-435a-95d4-ab0a6d53e4d8.jpg?v=1758940453"},{"product_id":"drive-rubber-bellows-fits-volvo-penta-aq80-aq100-aq100b-aq100s-replaces-875512-875827","title":"Drive Rubber Bellows – Fits Volvo Penta AQ80, AQ100, AQ100B, AQ100S (Replaces 875512, 875827)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eDrive Rubber Bellows\u003c\/strong\u003e is an aftermarket replacement part designed for Volvo Penta sail drive and AQ drive series engines, specifically fitting AQ80, AQ100, AQ100B, and AQ100S models.\u003c\/p\u003e\n\u003cp\u003eIt is a direct interchange for OEM part numbers 875512 and 875827.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for external installation at the drive shaft connection.\u003c\/li\u003e\n\u003cli\u003eMade from durable rubber to withstand demanding marine environments.\u003c\/li\u003e\n\u003cli\u003eIncludes two new stainless steel clamps for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e875512\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e875827\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ80\u003c\/td\u003e\n \u003ctd\u003e875512 \/ 875827\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ100\u003c\/td\u003e\n \u003ctd\u003e875512 \/ 875827\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ100B\u003c\/td\u003e\n \u003ctd\u003e875512 \/ 875827\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ100S\u003c\/td\u003e\n \u003ctd\u003e875512 \/ 875827\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eDrive Rubber Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eExternal, drive shaft connection\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e11.0\" H x 16.0\" W x 16.0\" L\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e50 grams (1.76 ounces)\u003c\/dd\u003e\n \u003cdt\u003eIncluded Hardware\u003c\/dt\u003e\n\u003cdd\u003e2 stainless steel clamps\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Bellows\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Stainless Steel Clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the engine is off and disconnect the boat's battery for safety.\u003c\/li\u003e\n\u003cli\u003eAccess the sterndrive unit, tilting it to the full \"up\" position if necessary.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old clamps, then cut or slide off the old bellows.\u003c\/li\u003e\n\u003cli\u003eThoroughly clean the mounting surfaces on the drive and transom assembly. Remove any old sealant or residue.\u003c\/li\u003e\n\u003cli\u003eSlide the new bellows into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n\u003cli\u003eSecure the new bellows with the provided stainless steel clamps, tightening them to the manufacturer's torque specification to ensure a watertight seal.\u003c\/li\u003e\n\u003cli\u003eInspect the installation to confirm the bellows is not twisted or pinched.\u003c\/li\u003e\n\u003cli\u003eLower the drive, reconnect the battery, and test for leaks in a controlled environment (on the trailer or lift) before full operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I confirm this bellows fits my Volvo Penta engine?\u003c\/summary\u003e\u003cp\u003eThis bellows is specifically designed for Volvo Penta models AQ80, AQ100, AQ100B, and AQ100S. The most reliable way to confirm fitment is to check if your existing part number matches the replacements: 875512 or 875827.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing drive bellows?\u003c\/summary\u003e\u003cp\u003eVisible signs include cracking, drying, brittleness, or tearing of the rubber. A critical indicator of failure is water leaking into the boat's bilge area, which suggests the bellows has been compromised and is no longer watertight.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should a drive bellows be replaced?\u003c\/summary\u003e\u003cp\u003eAs a critical preventative maintenance item, it is recommended to inspect drive bellows annually and replace them every 3-5 years, depending on usage intensity, storage conditions, and exposure to saltwater versus freshwater. Do not wait for it to fail completely.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this part different from the original OEM bellows?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket part designed to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function. It uses comparable, high-durability rubber but is available at a more competitive price point.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part or aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most regions; any available expedited options and associated costs will appear at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50610203394363,"sku":"875512","price":54.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/875512_1bdea8ae-3975-4f7c-b1b7-de294e29d702.jpg?v=1758940543"},{"product_id":"exhaust-bellows-fits-mercruiser-alpha-one-bravo-drives-replaces-18654a1-32734a3","title":"Exhaust Bellows – Fits Mercruiser Alpha One \u0026 Bravo Drives (Replaces 18654A1, 32734A3)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis high-quality \u003cstrong\u003eExhaust Bellows\u003c\/strong\u003e is designed for a broad range of Mercruiser stern drives, including Alpha One Gen I (1983–1990), Alpha One Gen II (1991–Current), and Bravo I, II, \u0026amp; III models. It is also compatible with #1, R, MR, TRS, and Blackhawk drives from 1978 onward, providing a reliable replacement for your vessel's exhaust system.\u003c\/p\u003e\n\u003cp\u003eThis part serves as a direct replacement and provides interchange for Mercury 18654A1, 32734A3, 18654B1, 8M0124227; Sierra 18-2750; GLM 89100; and CEF 500512K.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered as a direct replacement for a precise fit.\u003c\/li\u003e\n\u003cli\u003eSecured with included stainless steel hose clamps for lasting durability.\u003c\/li\u003e\n\u003cli\u003eKit includes one bellows and two clamps for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e18654A1\u003c\/td\u003e\n \u003ctd\u003e8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e32734A3\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e18654B1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e8M0124227\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2750\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89100\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500512K\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercruiser applications, this part covers a wide range of models from 1978 to current, as detailed in the matrix.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e120\/140\u003c\/td\u003e\n \u003ctd\u003e120-140\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e165\u003c\/td\u003e\n \u003ctd\u003e165\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1978–1981\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e260\u003c\/td\u003e\n \u003ctd\u003e260\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e470\u003c\/td\u003e\n \u003ctd\u003e470\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e485\u003c\/td\u003e\n \u003ctd\u003e485\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1980–1982\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e898\/228\u003c\/td\u003e\n \u003ctd\u003e228\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1978–1982\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen I\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991–Current\u003c\/td\u003e\n \u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows \/ Bellow\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eHose clamp secured\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eInner Diameter: 2.5 in (63.5 mm), Length: 5.25 in (133.4 mm)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust bellows with clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by seller (1 year typical)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor use on MerCruiser MC-I, MR, Alpha One, Alpha One Gen II, Vazer, Bravo and Blackhawk (1963 and newer) stern drives\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Exhaust Bellow (replaces 18654A1\/8M0124227)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Stainless Steel Hose Clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and disconnect the battery for safety.\u003c\/li\u003e\n \u003cli\u003eTilt the sterndrive unit to the full upward or trailer position to access the bellows.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the hose clamps securing the old exhaust bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows from the transom assembly and drive.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on both ends to ensure a clean, secure seal.\u003c\/li\u003e\n \u003cli\u003eSlide the new hose clamps over each end of the new bellows before installation.\u003c\/li\u003e\n \u003cli\u003eFit the new exhaust bellows into position, ensuring it is fully seated on the drive and transom assembly.\u003c\/li\u003e\n \u003cli\u003ePosition and securely tighten the new hose clamps to prevent leaks.\u003c\/li\u003e\n \u003cli\u003eLower the sterndrive and visually inspect for proper alignment and a tight fit.\u003c\/li\u003e\n \u003cli\u003eAfter reconnecting the battery, run the engine and check for any exhaust leaks around the new bellows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this exhaust bellows will fit my drive?\u003c\/summary\u003e\n \u003cp\u003eThis part is designed for a wide range of Mercruiser drives. Please review the 'Engine \u0026amp; Model Compatibility' and 'Part Number Matrix' sections on this page to confirm that your specific model and original part number are listed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my exhaust bellows needs replacement?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of a failing exhaust bellows include visible cracks, splits, or perishing of the rubber. You might also notice an unusually loud exhaust noise or find water in the bilge area, which can indicate a leak.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I inspect or replace my exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect all bellows annually as part of routine maintenance. For preventative care, consider replacement every 3-5 years, depending on usage, storage conditions (sun and heat exposure), and water type (saltwater vs. freshwater).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717886841147,"sku":"17B1003","price":22.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Exhaust_Bellows_Fits_Mercruiser_Alpha_1_Gen_II_Bravo_32734A3_-_JLM_MARINE-8287838.jpg?v=1762937386"},{"product_id":"exhaust-bellow-fits-volvo-penta-omc-cobra-2-3l-8-1l-v4-v6-v8-engines-replaces-3863450-3852741","title":"Exhaust Bellow – Fits Volvo Penta \u0026 OMC Cobra 2.3L-8.1L V4\/V6\/V8 Engines (Replaces 3863450, 3852741)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis OEM-quality \u003cstrong\u003eExhaust Bellow – Fits Volvo Penta \u0026amp; OMC Cobra 2.3L-8.1L V4\/V6\/V8 Engines (Replaces 3863450, 3852741)\u003c\/strong\u003e is a direct replacement for original equipment on specific Volvo Penta and OMC Cobra marine drive units. It is designed for Volvo Penta 2.3L–8.1L engines from 1986–1991 and OMC Cobra 2.3L–5.8L engines from 1987–1991.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Volvo Penta parts 3863450 and 3852742, OMC parts 3852741, 3852742, 0778066, 0912376, and 0913592, and several aftermarket equivalents.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMethod: Direct OEM-style replacement installation.\u003c\/li\u003e\n\u003cli\u003eEnvironment: Designed for marine saltwater and freshwater conditions.\u003c\/li\u003e\n\u003cli\u003eHousing: Constructed from durable, marine-grade rubber.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3852742\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e3852741\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e3852742\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e0778066\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e0912376\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e0913592\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2780-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89222\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72800\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eVolvo Penta Fitment:\u003c\/b\u003e Primarily for sterndrive models from 1986 to 1991.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e2.3L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987–1988\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e2.5L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3.0L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e4.3L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987–1989\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.0L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.7L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986, 1987–1991\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.8L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e7.4L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e8.1L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3863450\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003eOMC Cobra Fitment:\u003c\/b\u003e Primarily for sterndrive models from 1987 to 1991.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"OMC Cobra Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e2.3L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1989–1991\u003c\/td\u003e\n \u003ctd\u003e3852741\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e4.3L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987–1989\u003c\/td\u003e\n \u003ctd\u003e3852741\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e5.0L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3852741\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e5.7L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1989–1991\u003c\/td\u003e\n \u003ctd\u003e3852741\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e5.8L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3852741\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellow\/Hose\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eHose Coupler\/Bellow\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-Grade Rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Coupler\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eISO9002 Certified Manufacturing\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Exhaust Bellow (Replaces 3863450\/3852741)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the engine is off and the battery is disconnected. Trim the sterndrive unit to the full \"up\" or \"trailer\" position for access.\u003c\/li\u003e\n\u003cli\u003eLocate the old exhaust bellow connecting the transom assembly to the sterndrive.\u003c\/li\u003e\n\u003cli\u003eLoosen and remove the hose clamps at both ends of the bellow.\u003c\/li\u003e\n\u003cli\u003eCarefully pry the old bellow off the mounting flanges. Clean the flange surfaces of any old adhesive or rubber residue.\u003c\/li\u003e\n\u003cli\u003ePosition the new exhaust bellow, ensuring it is oriented correctly.\u003c\/li\u003e\n\u003cli\u003eSecure the new bellow by tightening the hose clamps at both ends to the manufacturer's recommended torque. Do not overtighten.\u003c\/li\u003e\n\u003cli\u003eLower the drive, reconnect the battery, and start the engine. Check for exhaust leaks around the new bellow connections.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if this bellow fits my specific engine model?\u003c\/summary\u003e\n\u003cp\u003eThe best way is to match your engine's original part number to the cross-reference numbers in our Part Number Matrix. Additionally, check your engine model and year against the compatibility tables provided. If you are uncertain, please contact us with your drive's model and serial number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the signs of a failing exhaust bellow?\u003c\/summary\u003e\n\u003cp\u003eCommon signs include visible cracks, splitting, or perishing of the rubber; an increase in exhaust noise from the engine bay; water leaking into the bilge area from the transom shield; or exhaust fumes detected inside the boat.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often should an exhaust bellow be replaced?\u003c\/summary\u003e\n\u003cp\u003eThere is no fixed interval, but exhaust bellows should be inspected annually for signs of wear, cracking, or damage. Replacement is recommended as part of routine sterndrive maintenance every 3-5 years, or immediately if any signs of failure are present. Lifespan can vary based on usage, climate, and water conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs any special adhesive required for installation?\u003c\/summary\u003e\n\u003cp\u003eWhile some mechanics use a light application of bellows adhesive on the mounting flanges for a better seal, it is not always required if the surfaces are clean and the clamps are torqued correctly. Follow the recommendations in your engine's service manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I install this myself?\u003c\/summary\u003e\n\u003cp\u003eWhile installation can be done by an experienced DIY boater, it requires accessing a critical part of the sterndrive. We recommend professional installation to ensure a proper, leak-free seal, which is critical for preventing water from entering the vessel.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cb\u003ePro-Grade Standards\u003c\/b\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cb\u003eFast Global Fulfillment\u003c\/b\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cb\u003eManufacturer-Direct Value\u003c\/b\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717886906683,"sku":"17B1013","price":24.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Exhaust_Bellow_for_Volvo_Penta_OMC_Cobra_4_Cyl_30_43_57_L_Engines_V6_V8________3863450_-_JLM_MARINE-8287792.jpg?v=1762937389"},{"product_id":"lower-exhaust-bellow-fits-omc-cobra-stern-drive-volvo-penta-2-3-5-8l-engines-replaces-3852742","title":"Lower Exhaust Bellow – Fits OMC Cobra Stern Drive \u0026 Volvo Penta 2.3–5.8L Engines (Replaces 3852742)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eLower Exhaust Bellow – Fits OMC Cobra Stern Drive \u0026amp; Volvo Penta 2.3–5.8L Engines (Replaces 3852742)\u003c\/strong\u003e is a direct replacement for OMC Cobra stern drives (2.3L to 8.2L) and Volvo Penta stern drives with inboard marine engines (5.0L to 8.2L).\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Volvo Penta part numbers 3852742, 912376, and 913592, as well as aftermarket cross-references Sierra 18-2781, Mallory 9-72801, and GLM 89230.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eInstalls in the lower exhaust position on the stern drive.\u003c\/li\u003e\n \u003cli\u003eConstructed from high-grade rubber for durability in marine environments.\u003c\/li\u003e\n \u003cli\u003eManufactured in an ISO9002 certified facility for quality assurance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3852742\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e912376\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e913592\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2781\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72801\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89230\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta applications, this bellow is compatible with 5.0L, 5.7L, 5.8L, 7.4L, 8.1L, and 8.2L inboard engines.\u003c\/p\u003e\n\u003cp\u003eFor OMC Cobra applications, this bellow fits 2.3L, 2.6L, 4.3L, 4.6L, 5.0L, 5.7L, 5.8L, 7.4L, and 8.2L stern drive engines.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eInboard Marine\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e3852742\u003c\/td\u003e\n \u003ctd\u003eFor engines: 5.0L 5.8L 7.4L 8.1L 8.2L\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra Stern Drive\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e3852742\u003c\/td\u003e\n \u003ctd\u003eFor engines: 2.3L 2.6L 4.3L 4.6L 5.0L 5.7L 5.8L 7.4L 8.2L\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellow\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eLower exhaust position\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e4\" diameter\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eHose connection\u003c\/dd\u003e\n \u003cdt\u003eManufacturing Standards\u003c\/dt\u003e\n\u003cdd\u003eISO9002 certified factory\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Lower Exhaust Bellow\/Hose (3852742)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the battery is disconnected before starting.\u003c\/li\u003e\n \u003cli\u003eGain clear access to the stern drive's lower exhaust bellow.\u003c\/li\u003e\n \u003cli\u003eCarefully loosen and remove the clamps securing the old bellow at both ends.\u003c\/li\u003e\n \u003cli\u003eGently pry off and remove the old, worn bellow. Note its orientation.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the transom assembly and drive.\u003c\/li\u003e\n \u003cli\u003ePosition the new bellow correctly and slide it into place.\u003c\/li\u003e\n \u003cli\u003eSecurely fasten the new clamps on both ends, ensuring a watertight seal.\u003c\/li\u003e\n \u003cli\u003eDouble-check that the clamps are tight and the bellow is not twisted or pinched.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery and test the engine, checking for any exhaust or water leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if my exhaust bellow needs to be replaced?\u003c\/summary\u003e\n \u003cp\u003eSigns of a failing bellow include visible cracks, splits, or perishing rubber. You may also notice an increase in exhaust noise at the stern or find water in the bilge area, which indicates a leak.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWill this part fit my specific engine model and year?\u003c\/summary\u003e\n \u003cp\u003eThis bellow is designed for a wide range of OMC Cobra and Volvo Penta engines as listed. While exact year ranges are not available, it covers the most common models. Always verify by comparing your old part to our photos and listed part numbers.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this bellow resistant to saltwater?\u003c\/summary\u003e\n \u003cp\u003eYes, it is made from high-quality, marine-grade rubber specifically formulated to resist degradation from saltwater, UV exposure, and engine heat.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eAre installation clamps included with this part?\u003c\/summary\u003e\n \u003cp\u003eThis product includes the bellow only. Hose clamps are not included and must be purchased separately or reused if your existing clamps are in good, corrosion-free condition.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n \u003cp\u003eExhaust bellows are a critical maintenance item. It is recommended to inspect them annually and replace them every 3-5 years, or immediately if you see any signs of wear, damage, or cracking.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat could happen if I don't replace a faulty bellow?\u003c\/summary\u003e\n \u003cp\u003eA failed exhaust bellow can allow water to enter your boat's transom and bilge, potentially causing catastrophic damage to the gimbal bearing, U-joints, and other critical stern drive components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717886939451,"sku":"17B1012","price":24.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Lower_Exhaust_Bellow_for_OMC_Cobra_Stern_Drive_Volvo_Penta_23_50_57_58_L_Engines__________3852742_-_JLM_MARINE-8287785.jpg?v=1762937390"},{"product_id":"exhaust-bellow-fits-volvo-penta-sx-dp-s-dp-sm-omc-cobra-stern-drives-replaces-3850426","title":"Exhaust Bellow – Fits Volvo Penta SX\/DP-S\/DP-SM \u0026 OMC Cobra Stern Drives (Replaces 3850426)","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n table.ss-table th {\n white-space:nowrap;\n word-break:normal;\n letter-spacing:normal;\n font-weight:600;\n background:#f8fafc;\n }\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis aftermarket \u003cstrong\u003eExhaust Bellow – Fits Volvo Penta SX\/DP-S\/DP-SM \u0026amp; OMC Cobra Stern Drives (Replaces 3850426)\u003c\/strong\u003e creates a crucial seal between the stern drive and the transom assembly. It is compatible with a wide range of Volvo Penta V6\/V8 engines using SX, DP-S, and DP-SM stern drives, as well as OMC Cobra stern drives manufactured from 1986–1993.\u003c\/p\u003e\n \u003cp\u003eThis part is a direct replacement for Volvo Penta 3850426, OMC 914036, Sierra 18-2764, and others. Please see the part number matrix for a complete list of interchanges.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eEngineered for direct-fit installation.\u003c\/li\u003e\n \u003cli\u003eMade from a durable rubber compound for marine environments.\u003c\/li\u003e\n \u003cli\u003eComes as a comprehensive kit for a complete overhaul.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3850426-2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e914036\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2764\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-1074\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89190\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72711\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eFor Volvo Penta applications, this bellow is compatible with SX, DP-S, and DP-SM series stern drives across various V6 and V8 engine displacements.\u003c\/p\u003e\n \u003cp\u003eFor OMC applications, this part fits Cobra stern drives on V6\/V8 engines from 1986 through 1993.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX Stern Drive\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003eFits 3.0L, 4.3L, 5.0L, 5.7L engines\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S Stern Drive\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003eFits V6\/V8 engines\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-SM Stern Drive\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003eFits V6\/V8 engines\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3.0L\u003c\/td\u003e\n \u003ctd\u003e130-135\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e4.3L\u003c\/td\u003e\n \u003ctd\u003e205-225\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.0L\u003c\/td\u003e\n \u003ctd\u003e220-270\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.7L\u003c\/td\u003e\n \u003ctd\u003e260-320\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.8L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e7.4L\u003c\/td\u003e\n \u003ctd\u003e310-330\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e8.2L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll SX models\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e914036\u003c\/td\u003e\n \u003ctd\u003eFits V6\/V8 engines\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellow\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eStern drive to transom assembly\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/synthetic compound\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e100g (0.22 lb)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eDirect fit\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (aftermarket)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eOEM specifications; ISO9002 certified manufacturing\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cp\u003eThis is a complete bellows assembly kit. Some retailers may sell the bare exhaust bellow separately.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellow (AM3850426)\u003c\/li\u003e\n \u003cli\u003e1 x U-Joint Bellow (AM3841481)\u003c\/li\u003e\n \u003cli\u003e2 x O-Ring (AM25-30613)\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring (AM3852045)\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring (AM955981)\u003c\/li\u003e\n \u003cli\u003e1 x Anode Kit Aluminum (CMSXKITA)\u003c\/li\u003e\n \u003cli\u003e1 x Pin (AM3852056)\u003c\/li\u003e\n \u003cli\u003e1 x Rubber Seal (AM3852560)\u003c\/li\u003e\n \u003cli\u003e1 x Gasket (AM3855081)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003cp\u003eThe following are generic steps. Always consult your official service manual for detailed procedures specific to your stern drive model.\u003c\/p\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the boat's battery and take appropriate safety precautions.\u003c\/li\u003e\n \u003cli\u003eTilt the stern drive to the full 'up' or 'trailer' position for access.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the clamps securing the old exhaust bellow to the transom and the stern drive.\u003c\/li\u003e\n \u003cli\u003eCarefully pry the old bellow off both mounting surfaces. Note its orientation.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the transom and drive to ensure a clean seal.\u003c\/li\u003e\n \u003cli\u003eFit the new bellow into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n \u003cli\u003eSecure the bellow with new hose clamps, tightening them to the manufacturer's specified torque. Do not overtighten.\u003c\/li\u003e\n \u003cli\u003eLower the drive and inspect the seal. Once confirmed, reconnect the battery and test for leaks in the water.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if my exhaust bellow is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of a worn or failed exhaust bellow include visible cracks or splits in the rubber, water leaking into the bilge from the transom area, or a noticeable increase in exhaust volume at the stern of the boat.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWill this fit my specific engine year?\u003c\/summary\u003e\n \u003cp\u003eThis bellow fits all years for the specified Volvo Penta SX, DP-S, and DP-SM drives, and OMC Cobra drives from 1986–1993. The most reliable way to confirm fitment is to match your existing part number to one of the equivalents listed in our Part Number Matrix.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between an exhaust bellow and a U-joint bellow?\u003c\/summary\u003e\n \u003cp\u003eThe exhaust bellow provides a sealed passage for engine exhaust to exit through the stern drive. The U-joint (or driveshaft) bellow protects the universal joints and driveshaft from water intrusion. Both are critical for stern drive integrity, and this kit includes both components.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my stern drive bellows?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance measure, it is recommended to inspect all bellows annually for signs of wear, such as cracking, stiffness, or rot. Full replacement is typically advised every 3-5 years, depending on usage and water conditions (saltwater vs. freshwater).\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717886972219,"sku":"17B1010","price":25.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Exhaust_Bellow_Replaces_Volvo_Penta_SX_DP-S_DP-SM_OMC_Cobra_Stern_Drive_V6_V8_Engines________3850426_-_JLM_MARINE-8287771.jpg?v=1762937391"},{"product_id":"shift-cable-bellows-kit-fits-mercruiser-alpha-one-gen-ii-bravo-i-ii-iii-sterndrives-replaces-74639a2","title":"Shift Cable Bellows Kit – Fits MerCruiser Alpha One, Gen II, Bravo I, II, III Sterndrives (Replaces 74639A2)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eShift Cable Bellows Kit\u003c\/strong\u003e is engineered for MerCruiser stern drives that use a drive unit shift cable, covering models from 1963 and newer. It fits a wide range of series including R, MR, Alpha One (Gen I \u0026amp; II), and Bravo I, II, \u0026amp; III.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 74639A2, GLM 89080, Sierra 18-2753-2, and Mallory 9-72705.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned for a direct OEM replacement fit.\u003c\/li\u003e\n \u003cli\u003eConstructed from high-grade rubber resistant to deformation and aging for long service life.\u003c\/li\u003e\n \u003cli\u003eIncludes the necessary C-clamp and hose clamp for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e74639B\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e74639B1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e74639Q02\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e89080\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-2753-2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-72705\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eBPI\u003c\/td\u003e\n\u003ctd\u003eBPI89080\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSEI\u003c\/td\u003e\n\u003ctd\u003e9A-108-04K\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part fits a wide range of MerCruiser stern drive models. The list below includes common examples.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One (Gen I)\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1983–1990\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003eTransom Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One (Gen I)\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1983–1990\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003eSterndrive Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1991–1995\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1996–Up\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo I\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1988–2013\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo II\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1988–2013\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo III\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1988–2013\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo X One\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2013\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo X Two\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2013\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo X Three\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2013\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo XR One\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2009\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo XR Three\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2009\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo XR Sportmaster\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2009\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo XZ One\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998–2002\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eVazer Drive\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eVazer Transom\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eI, IA, IB, IC\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1963–1966\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eII\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1962–1969\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e120\/140\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1967–1982\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e160\/165\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1967–1982\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e215, 225-S, 228, 233\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1970–1977\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e250, 260\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1977–1982\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e470, 485\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1976–1982\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e888, 898\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1971–1982\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBlackHawk\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1993–1998\u003c\/td\u003e\n\u003ctd\u003e74639A2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eShift Cable Bellows\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eC-clamp and hose clamp\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eDesigned for long service life, resistant to deformation and aging\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Shift Cable Bellows (Replaces 74639A2)\u003c\/li\u003e\n \u003cli\u003e1 x C-Clamp\u003c\/li\u003e\n \u003cli\u003e1 x Hose Clamp\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the drive is in a safe, accessible position. The drive may need to be trimmed up for access.\u003c\/li\u003e\n \u003cli\u003eRemove the old shift cable bellows by loosening its clamps, noting the orientation.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the transom assembly and bell housing to ensure a clean seal.\u003c\/li\u003e\n \u003cli\u003eInstall the new bellows, making sure it is properly seated and sealed on both ends.\u003c\/li\u003e\n \u003cli\u003eSecure the bellows using the new C-clamp and hose clamp provided. Ensure they are tight.\u003c\/li\u003e\n \u003cli\u003eAfter installation, operate the shift control to verify the cable moves smoothly without binding or resistance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows will fit my specific MerCruiser model?\u003c\/summary\u003e\n \u003cp\u003eThis part is designed for all MerCruiser stern drives using a drive unit shift cable from 1963 onward. To be certain, cross-reference your existing part number with our \"Part Number Matrix\" and check your model and year in the \"Engine \u0026amp; Model Compatibility\" table.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing shift cable bellows?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include visible cracks, splits, brittleness, or perishing of the rubber. A leaking bellows is a serious issue, as it will allow water into the gimbal housing and bilge area, which can quickly damage the shift cable, gimbal bearing, and other components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the shift cable bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect all bellows annually for signs of wear or damage. As a preventative measure, bellows should be replaced every 3-5 years, depending on usage and environmental conditions (saltwater vs. freshwater).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this part difficult to install?\u003c\/summary\u003e\n \u003cp\u003eInstallation can be performed by experienced DIY mechanics, but it requires working in tight spaces and attention to detail to ensure a perfect, watertight seal. Due to the critical nature of this part, professional installation is recommended to prevent water intrusion and subsequent damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887004987,"sku":"17B1005","price":17.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/C-clamp-removebg_32a39e51-3f21-44cc-bc9a-017100fd6161.png?v=1762937393"},{"product_id":"u-joint-drive-bellows-kit-fits-volvo-penta-stern-drive-replaces-876294-875826","title":"U-Joint Drive Bellows Kit – Fits Volvo Penta Stern Drive (Replaces 876294, 875826)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis U-Joint Drive Bellows Kit is an essential component for protecting the universal joint on Volvo Penta 200-290 series stern drives (including AQ, DP-A through DP-G, SX, DPX, and SP models) from approximately 1975 to the present. It prevents water intrusion, which can lead to catastrophic U-joint failure.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Volvo Penta part numbers 876294, 897637, and 875826, and interchanges with Sierra 18-2744 and Cobra Marine 18-2744.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls on the stern drive's U-joint housing.\u003c\/li\u003e\n\u003cli\u003eProtects critical U-joint components from water intrusion.\u003c\/li\u003e\n\u003cli\u003eIncludes stainless steel clamps for a secure fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e897637\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e875826\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2744\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCobra Marine\u003c\/td\u003e\n \u003ctd\u003e18-2744\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYankok\u003c\/td\u003e\n \u003ctd\u003eYKBO-VOV-PET87\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part is designed for a wide range of Volvo Penta stern drive models. Please verify your specific model is listed.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ200, AQ250, AQ270, AQ270T, AQ275, AQ275A\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ280, AQ280DP, AQ280PT, AQ280T, AQ285A\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ290, AQ290A, AQ290DP, AQ290DPA\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-A, DP-A1, DP-A2\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-B, DP-B1\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-C, DP-C1\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-D, DP-D1\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-E, DP-G\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDPH, DPX\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSP-A, SP-A1, SP-A2\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSP-C, SP-C1, SP-E\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e230A, 230B, 250A, 250B\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eKAD42P-A, KAMD42P-A\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e430A, 430B, 431A, 431B, 432A, 434A\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e500B, 501B, 570A, 572A, 740B\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAD31L-A, AD31P-A, AD41L-A, AD41P-A\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eD41L-A, TAMD31L-A, TAMD31M-A\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-M, DPS-M, SX-A, DPS-A, SX-B, DPS-B, XDP\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Drive Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eStern Drive U-Joint Housing\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eConnects Upper and Lower Drive Components\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eStainless Steel Clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (Aftermarket)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eProtects U-Joint from water intrusion\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x U-Joint Drive Bellows\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Stainless Steel Clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the boat's battery for safety.\u003c\/li\u003e\n\u003cli\u003eTilt the stern drive to the full \"up\" or \"trailer\" position to access the bellows.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old clamps and cut away or slide off the old bellows.\u003c\/li\u003e\n\u003cli\u003eThoroughly clean the mounting surfaces on the upper and lower drive components.\u003c\/li\u003e\n\u003cli\u003eFit the new bellows into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n\u003cli\u003eSecure the new bellows with the provided stainless steel clamps, tightening them to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003eLower the drive and inspect for a proper seal.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery once installation is complete.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows fits my specific boat?\u003c\/summary\u003e\n \u003cp\u003eThis kit is designed for a broad range of Volvo Penta stern drives from 1975 to present. The best way to confirm fitment is to check your model against the compatibility table on this page. If your model is listed, it will fit. Also, verify that your existing part number matches one of the numbers in the Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing U-joint bellows?\u003c\/summary\u003e\n \u003cp\u003eThe most common signs of failure are visible cracks, splits, or perishing of the rubber. Another critical sign is finding water inside the bellows during a service inspection, which indicates a leak. You may also hear grinding or whining noises from the U-joint area, indicating water has already caused damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should this bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect the U-joint bellows annually and replace it as part of a regular stern drive service schedule, typically every 1-2 seasons, depending on usage and water conditions (saltwater vs. freshwater). Proactive replacement prevents catastrophic U-joint failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs there a difference between OEM and this aftermarket part?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It's built to OEM-level specifications with comparable materials for a precise fit and reliable function. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for consistency and quality.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow fast do you ship and what does it cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days for most regions. Standard shipping is free for all orders. Expedited shipping options and their costs will be displayed at checkout if they are available for your location.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window, provided the part is unused and in its original condition. See our full policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887136059,"sku":"17B1016","price":32.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/U-Joint_Drive_Bellows_for_Volvo_Penta_Stern_Drive_AD_AQ_BB_DP_PT_DP_DPX_SP_Models______876294_-_JLM_MARINE-8287737.jpg?v=1762937397"},{"product_id":"exhaust-tube-bellows-fits-mercruiser-alpha-one-bravo-stern-drives-replaces-78458a1","title":"Exhaust Tube Bellows – Fits MerCruiser Alpha One \u0026 Bravo Stern Drives (Replaces 78458A1)","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n table.ss-table th {\n white-space:nowrap;\n word-break:normal;\n letter-spacing:normal;\n font-weight:600;\n background:#f8fafc;\n }\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eExhaust Tube Bellows\u003c\/strong\u003e is designed for a broad range of MerCruiser stern drives, including R, MR, Alpha One, Alpha One Gen II, and Bravo I\/II\/III models manufactured from 1963 to present, as well as Blackhawk models (1994–1995). It facilitates the dissipation of excess exhaust gas before it reaches the sterndrive.\u003c\/p\u003e\n \u003cp\u003eThis part is a direct replacement for MerCruiser 78458A1, Sierra 18-2760, CEF 500520K, GLM 89150, OMC\/Johnson\/Evinrude 0508711\/0775482, and Mallory 9-72810.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eEngineered for high-performance applications and recommended for engines exceeding 300 HP.\u003c\/li\u003e\n \u003cli\u003eAttaches securely to the transom side bell housing for a reliable seal.\u003c\/li\u003e\n \u003cli\u003eThe package includes the exhaust bellows, a stainless steel clamp, and a clip for a complete installation.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2760\u003c\/td\u003e\n \u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t \u003ctd\u003eCEF\u003c\/td\u003e\n\t\t \u003ctd\u003e500520K\u003c\/td\u003e\n\t \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89150\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e0508711\u003c\/td\u003e\n \u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n\t\t \u003ctd\u003e0775482\u003c\/td\u003e\n\t \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72810\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model and year in the table below to ensure correct fitment.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR, MR\u003c\/td\u003e\n \u003ctd\u003e1963–1990\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003eFits Serial No. 6225577 \u0026amp; UP (1983-1990)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003eFits Serial No. 6225577 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1991–Present\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo I, II, III\u003c\/td\u003e\n \u003ctd\u003e1988–Present\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003eFits Serial No. OB664190 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t \u003ctd\u003eMerCruiser\u003c\/td\u003e\n\t\t \u003ctd\u003eBlackhawk\u003c\/td\u003e\n\t\t \u003ctd\u003e1994–1995\u003c\/td\u003e\n\t\t \u003ctd\u003e78458A1\u003c\/td\u003e\n\t\t \u003ctd\u003eFits Serial No. 0F18677 \u0026amp; UP\u003c\/td\u003e\n\t \u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n\t\t \u003ctd\u003e\u003c\/td\u003e\n\t\t \u003ctd\u003e\u003c\/td\u003e\n\t\t \u003ctd\u003e0508711, 0775482\u003c\/td\u003e\n\t\t \u003ctd\u003e\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Tube Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eAttaches to transom side only (bell housing)\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eBell housing to outdrive\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless Steel \u0026amp; Rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eClamp-on\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eRecommended for engines with more than 300 HP; Allows excess exhaust gas to dissipate before the drive\u003c\/dd\u003e\n \u003c\/dl\u003e\n\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Exhaust Tube Bellows (78458A1)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Stainless Steel Clamp\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e1 x Clip\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the negative battery terminal and ensure the engine is off and cool.\u003c\/li\u003e\n \u003cli\u003eGain clear access to the exhaust bellows connecting the bell housing and the outdrive.\u003c\/li\u003e\n\t\u003cli\u003eCarefully remove the old clamps securing the existing bellows.\u003c\/li\u003e\n\t\u003cli\u003ePry or cut the old bellows off the bell housing and drive, noting its orientation.\u003c\/li\u003e\n\t\u003cli\u003eThoroughly clean the mounting surfaces on the bell housing and drive to remove any old sealant or debris.\u003c\/li\u003e\n\t\u003cli\u003ePosition the new exhaust bellows onto the bell housing first.\u003c\/li\u003e\n\t\u003cli\u003eSecure the bellows to the bell housing using the new stainless steel clamp and clip provided.\u003c\/li\u003e\n \u003cli\u003eDouble-check that the bellows is evenly seated and the clamp is tight.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery, start the engine, and check for any exhaust or water leaks around the new bellows.\u003c\/li\u003e\n \u003c\/ol\u003e\n\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if this exhaust bellows will fit my engine?\u003c\/summary\u003e\n \u003cp\u003eThis part fits a wide range of MerCruiser stern drives from 1963 to present, including R, MR, Alpha One\/Gen II, and Bravo I\/II\/III models. Please check the \"Engine \u0026amp; Model Compatibility\" table and verify your serial number to ensure a perfect match.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include water leaking into the bilge, an unusually loud exhaust note from the stern, or visible cracks, splits, and deterioration on the rubber bellows itself. A failing bellows can lead to significant water damage, so it is critical to inspect it regularly and replace it as needed.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this bellows suitable for high-performance engines?\u003c\/summary\u003e\n \u003cp\u003eYes, this exhaust tube bellows is specifically recommended for engines rated over 300 HP. It is designed to allow excess exhaust gas to dissipate before the drive, which is beneficial for higher-output applications.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, where it is batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n \n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part before purchase. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement component, not an OEM part.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and optimal performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887168827,"sku":"17B1015","price":23.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Exhaust_Tube_Bellows_for_Mercruiser_Alpha_and_Bravo_Stern_Drive__78458A1_-_JLM_MARINE-8287730.jpg?v=1762937399"},{"product_id":"u-joint-bellows-fits-mercruiser-alpha-one-gen-ii-vazer-sterndrives-replaces-816431a1","title":"U-Joint Bellows – Fits MerCruiser Alpha One Gen II \u0026 Vazer Sterndrives (Replaces 816431A1)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eU-Joint Bellows – Fits MerCruiser Alpha One Gen II \u0026amp; Vazer Sterndrives (Replaces 816431A1)\u003c\/strong\u003e assembly is designed for MerCruiser Alpha One Gen II and Vazer sterndrives from 1991 and newer models. It serves as a crucial component to prevent water from entering the bell housing and damaging the u-joint and gimbal bearing.\u003c\/p\u003e\n \u003cp\u003eIt is a direct aftermarket replacement for Mercury\/Quicksilver 816431A1 and interchanges with Sierra 18-2747, GLM 89180, and Mallory 9-72704.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eDirect OEM replacement fit for straightforward installation.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable, flexible composite rubber for longevity.\u003c\/li\u003e\n \u003cli\u003eIncludes essential installation hardware such as clamps and a grounding clip.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket suppliers.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Quicksilver\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2747\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89180\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72704\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500515K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAM\u003c\/td\u003e\n \u003ctd\u003eAM816431A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eREC\u003c\/td\u003e\n \u003ctd\u003eREC816431A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model and year in the table below to ensure accurate fitment.\u003c\/p\u003e\n \u003cp\u003eFor MerCruiser Sterndrives: This part fits Alpha One Gen II models manufactured from 1991 to present, as well as all Vazer sterndrive models.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1991–1995\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1996–1997\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1998 and up\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eVazer\u003c\/td\u003e\n \u003ctd\u003eAll years\u003c\/td\u003e\n \u003ctd\u003e816431A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Assembly\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eFlexible composite rubber\u003c\/dd\u003e\n \u003cdt\u003eFunction\u003c\/dt\u003e\n\u003cdd\u003ePrevents water intrusion through bell housing\u003c\/dd\u003e\n \u003cdt\u003eIncludes Hardware\u003c\/dt\u003e\n\u003cdd\u003eYes, hose clamps for both ends\u003c\/dd\u003e\n \u003cdt\u003eInstallation Difficulty\u003c\/dt\u003e\n\u003cdd\u003eMedium, requires common tools\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.51 kg (1.13 lb)\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (Replaces 816431A1)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Grounding Clip (54-86049)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Worm Gear Clamp (54-815504372)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e1 x Sleeve (816607)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eSafely secure the vessel and place the sterndrive in the fully trimmed down position.\u003c\/li\u003e\n \u003cli\u003eRemove the sterndrive assembly from the bell housing according to the manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows and clamps. Thoroughly clean the mounting surfaces on the bell housing and gimbal housing.\u003c\/li\u003e\n \u003cli\u003eInstall the new bellows, ensuring the grounding clip makes proper contact if applicable.\u003c\/li\u003e\n \u003cli\u003eSecure both ends of the new bellows with the provided hose clamps, tightening them to the specified torque. Confirm a secure, watertight seal.\u003c\/li\u003e\n \u003cli\u003eReinstall the sterndrive assembly, ensuring correct alignment of the u-joint shaft.\u003c\/li\u003e\n \u003cli\u003eAfter reassembly, lower the drive and check carefully for leaks in a controlled environment before full operation on the water.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if my u-joint bellows needs replacement?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks, tears, or brittleness in the rubber. Water found inside the bellows or a rusty u-joint\/gimbal bearing are definitive indicators that a replacement is overdue.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended maintenance interval for this part?\u003c\/summary\u003e\n \u003cp\u003eU-joint bellows should be inspected annually for signs of wear or damage. As a preventative measure, it's wise to replace them every 3-5 years, or immediately if any damage is discovered.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWill this fit sterndrive models other than Alpha One Gen II?\u003c\/summary\u003e\n \u003cp\u003eThis bellows is specifically designed for MerCruiser Alpha One Gen II (1991+) and Vazer sterndrives. It will not fit Alpha One Gen I, Bravo, or other models. Always verify your drive model before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat happens if a u-joint bellows fails during operation?\u003c\/summary\u003e\n \u003cp\u003eA failed bellows allows water to flood the bell housing, which will quickly destroy the gimbal bearing and u-joints. This can lead to catastrophic drive system failure, loss of propulsion, and costly repairs.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDo I need special tools for installation?\u003c\/summary\u003e\n \u003cp\u003eInstallation requires removing the sterndrive, which involves standard mechanic's tools, a socket set, and torque wrench. A bellows expansion tool can make the process easier. Bellows adhesive is also recommended for a secure seal.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs there a difference between this and the OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis aftermarket part is engineered to meet or exceed OEM specifications for fit, material quality, and performance. It provides a reliable and cost-effective alternative to OEM components.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887234363,"sku":"17B1007","price":29.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/U-Joint_Bellows_for_MerCruiser_Alpha_1_Gen_2_and_Vazer_1991_and_up_Stern_Drives___________816431A1_-_JLM_MARINE-8287716.jpg?v=1762937400"},{"product_id":"u-joint-shift-bellows-kit-fits-omc-cobra-1986-later-and-volvo-penta-sx-dp-models-replaces-3854270-3858631","title":"U-Joint Shift Bellows Kit – Fits OMC Cobra (1986 \u0026 Later) and Volvo Penta SX\/DP Models (Replaces 3854270, 3858631)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eU-Joint Shift Bellows Kit\u003c\/strong\u003e is designed as a direct replacement for OMC Cobra sterndrive models (1986 and later, without cone clutch) and a wide range of Volvo Penta SX and DP series models. It protects the critical u-joint and drive components from water intrusion, ensuring longevity and reliable performance.\u003c\/p\u003e\n\u003cp\u003eThis kit provides a direct interchange for several OEM and aftermarket part numbers, including OMC and Volvo Penta 3854270\/3858631, GLM 21962, Sierra 18-2771, and Mallory 9-72930.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered for direct replacement with OEM-matching fittings.\u003c\/li\u003e\n \u003cli\u003eManufactured from durable rubber\/neoprene to OEM specifications.\u003c\/li\u003e\n \u003cli\u003eIncludes the necessary clamp for a secure installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Stern Drive\u003c\/td\u003e\n \u003ctd\u003e3854270\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Stern Drive\u003c\/td\u003e\n \u003ctd\u003e3858631\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3854270\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3858631\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21962\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2771\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72930\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor OMC Cobra models from 1986 and later, this bellow applies to sterndrives that do not use a cone clutch.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta, this part fits various SX and DP outdrives. Verify your specific model against the list below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003e1986 \u0026amp; Later\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003eWithout cone clutch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-S\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-C\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-R\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-M\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-SM\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e3854270\/3858631\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Shift Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eOEM-matching fittings\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/neoprene\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eOEM-compatible fittings with clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 year manufacturer's warranty\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications using the exact same material as the originals. Produced in an ISO9002 certified factory.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows with Clamp (Replaces 3854270\/3858631)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the boat's battery for safety.\u003c\/li\u003e\n \u003cli\u003eTilt the sterndrive to the full \"up\" or \"trailer\" position to access the bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old clamps and cut away the old bellow. Inspect the drive for any signs of water intrusion or damage.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on both the transom assembly and the sterndrive.\u003c\/li\u003e\n \u003cli\u003eFit the new bellows into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n \u003cli\u003eSecurely fasten the new clamps. Do not overtighten, but ensure they are snug enough to create a watertight seal.\u003c\/li\u003e\n \u003cli\u003eLower the sterndrive and inspect the bellow to ensure it collapses correctly and is not pinched.\u003c\/li\u003e\n \u003cli\u003eAfter launching the boat, check for any signs of leaks around the new installation before operating at speed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm this bellow fits my specific boat?\u003c\/summary\u003e\n \u003cp\u003eThe best way is to match your existing part number to one of the cross-reference numbers listed in our Part Number Matrix. If you can't find a part number, check your engine model and year against the Engine \u0026amp; Model Compatibility table. When in doubt, consult a marine mechanic.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a failing u-joint bellow?\u003c\/summary\u003e\n \u003cp\u003eVisible cracks, splitting, or perishing of the rubber are clear signs of failure. You may also find water inside the boat near the transom assembly or notice a milky, emulsified appearance in your sterndrive gear lube, which indicates water contamination due to a leak.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should this part be replaced?\u003c\/summary\u003e\n \u003cp\u003eU-joint bellows should be inspected annually for any signs of wear, cracking, or deterioration. A routine replacement interval of every 3-5 years is recommended for preventative maintenance, or immediately if any damage is found.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this the same as an exhaust bellow?\u003c\/summary\u003e\n \u003cp\u003eNo, they are different parts with different functions. The u-joint bellow seals the driveshaft and protects the u-joints as they pass through the transom. The exhaust bellow provides a flexible connection for the engine's exhaust gases. Ensure you are ordering the correct part for your needs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I reuse my old clamps?\u003c\/summary\u003e\n \u003cp\u003eIt is strongly recommended to use the new clamps provided in the kit. Old clamps can lose their tension, corrode, or become fatigued, which may lead to an improper seal and subsequent water damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887299899,"sku":"18B5002","price":82.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/U-Joint_shift_Bellows_Kit_for_OMC_Cobra_1986_to_Later_and_Volvo_Penta_SX-S_SX-C_SX-R_SX-M_DP-S_Stern_and_Out_drives_________3854270_3858631_-_JLM_MARINE-8287694.jpg?v=1762937403"},{"product_id":"transom-seal-bellows-kit-fits-volvo-penta-sx-dp-omc-cobra-stern-drives-replaces-3854127","title":"Transom Seal Bellows Kit – Fits Volvo Penta SX\/DP \u0026 OMC Cobra Stern Drives (Replaces 3854127)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eTransom Seal Bellows Kit\u003c\/strong\u003e is a direct replacement for Volvo Penta SX and DP series stern drives (SX-S, SX-C, SX-R, SX-M, DP-S) and OMC Cobra drives from 1986–1993, specifically for models without a cone clutch.\u003c\/p\u003e\n\u003cp\u003eIt provides a reliable seal and replaces Volvo Penta part numbers 22197130, 23075752, and 3841481, as well as OMC\/BRP 3854127.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDirect-fit clamp-on installation.\u003c\/li\u003e\n \u003cli\u003eMade from durable, marine-grade rubber to OEM specifications.\u003c\/li\u003e\n \u003cli\u003eEssential for protecting U-joints and gimbal bearings from water intrusion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e22197130\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e23075752\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eOMC \/ BRP\u003c\/td\u003e\n\u003ctd\u003e3854127\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-2765\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCEF\u003c\/td\u003e\n\u003ctd\u003e500514K\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eOther Aftermarket\u003c\/td\u003e\n\u003ctd\u003e43.932.60\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eVolvo Penta:\u003c\/b\u003e Fits various SX and DP series drives without a cone clutch. Verify your drive model is listed below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Engine Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX\u003c\/td\u003e\n\u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-S\u003c\/td\u003e\n\u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-C\u003c\/td\u003e\n\u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-R\u003c\/td\u003e\n\u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSX-M\u003c\/td\u003e\n\u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-S\u003c\/td\u003e\n\u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003eOMC (Johnson\/Evinrude):\u003c\/b\u003e Compatible with OMC Cobra models manufactured between 1986 and 1993 that do not use a cone clutch.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"OMC Engine Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e3854127\u003c\/td\u003e\n \u003ctd\u003eWithout cone clutch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eClamp-on\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBellows with clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (JSProxam aftermarket)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications using same materials as originals; produced in ISO9002 certified factory\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows with Clamp (replaces 3854127, 3841481, 22197130, 23075752)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the engine is off and cool.\u003c\/li\u003e\n \u003cli\u003eTrim the stern drive to the full \"up\" or \"trailer\" position for access.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows clamps using appropriate tools.\u003c\/li\u003e\n \u003cli\u003eCut or pull the old bellows from the transom and drive housings.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on both the transom and drive to remove old adhesive, rubber, and corrosion. A clean surface is critical for a good seal.\u003c\/li\u003e\n \u003cli\u003eApply a suitable bellows adhesive (not included) to the clean mounting surfaces.\u003c\/li\u003e\n \u003cli\u003eSlide the new bellows into position, ensuring it is seated correctly and evenly on both ends.\u003c\/li\u003e\n \u003cli\u003eSecurely fasten the new clamps. Do not overtighten, as this can damage the clamp or bellows.\u003c\/li\u003e\n \u003cli\u003eAllow the adhesive to cure per the manufacturer's instructions before launching the boat.\u003c\/li\u003e\n \u003cli\u003eLower the stern drive and inspect for proper alignment and a watertight seal.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows kit fits my stern drive?\u003c\/summary\u003e\n \u003cp\u003eThis kit fits Volvo Penta SX\/DP drives (SX-S, SX-C, SX-R, SX-M, DP-S) and OMC Cobra drives (1986–1993), provided they do not have a cone clutch. Always cross-reference your existing part number with those listed in our Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing transom bellows?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include visible cracks, splits, or perishing of the rubber. A critical indicator is water entering your bilge, which suggests the bellows has been breached and requires immediate replacement to prevent catastrophic damage to the gimbal bearing and u-joints.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhen should the U-joint bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect bellows annually and replace them as part of regular preventative maintenance every 2-3 years in saltwater or 3-5 years in freshwater, or immediately if any signs of wear or damage are found.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I install this bellows myself?\u003c\/summary\u003e\n \u003cp\u003eWhile DIY installation is possible for experienced mechanics with the correct tools, we recommend professional installation. An improper seal can lead to major water damage to the gimbal bearing and U-joints.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887365435,"sku":"18BK5002","price":87.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Transom_Seal_Rebuild_Bellow_Kit_for_Volvo_Penta_SX_DP_and_Cobra_Stern_or_Out_Drive_________3854127_-_JLM_MARINE-8287683.jpg?v=1762937404"},{"product_id":"transom-bellows-seal-kit-fits-mercruiser-bravo-1-2-3-drives-replaces-30-803100t1-8m0095485","title":"Transom Bellows Seal Kit – Fits MerCruiser Bravo 1, 2, 3 Drives (Replaces 30-803100T1, 8M0095485)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis complete \u003cstrong\u003eTransom Bellows Seal Kit – Fits MerCruiser Bravo 1, 2, 3 Drives (Replaces 30-803100T1, 8M0095485)\u003c\/strong\u003e is designed for MerCruiser Bravo I, II, and III stern drives from 1988 and newer (serial number 0B664190 and up), as well as Blackhawk models from 1994–1995 (serial number 0D469859 and up).\u003c\/p\u003e\n\u003cp\u003eIt directly replaces Mercury\/MerCruiser OEM parts 30-803100T1 and 8M0095485, and serves as an aftermarket interchange for Sierra 18-8212\/18-8219, GLM 21961\/21965, and Mallory 9-72903\/9-72905.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eKit includes all essential bellows, gaskets, clamps, and a gimbal bearing for a comprehensive service.\u003c\/li\u003e\n \u003cli\u003eDesigned for direct aftermarket or OEM replacement with no modifications needed.\u003c\/li\u003e\n \u003cli\u003eCovered by a 1-year aftermarket warranty for peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e30-803100T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e8M0095485\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8212 (greasable bearing)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8219 (sealed bearing)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21961\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21965\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72903\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72905\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRedline\u003c\/td\u003e\n \u003ctd\u003eRL21961\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFitment is confirmed for MerCruiser Bravo and Blackhawk models within the specified serial number ranges.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eApplication\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo I\u003c\/td\u003e\n \u003ctd\u003eStern Drive\u003c\/td\u003e\n \u003ctd\u003e1988 \u0026amp; up (SN: 0B664190 \u0026amp; up)\u003c\/td\u003e\n \u003ctd\u003e30-803100T1, 8M0095485\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo II\u003c\/td\u003e\n \u003ctd\u003eStern Drive\u003c\/td\u003e\n \u003ctd\u003e1988 \u0026amp; up (SN: 0B664190 \u0026amp; up)\u003c\/td\u003e\n \u003ctd\u003e30-803100T1, 8M0095485\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo III\u003c\/td\u003e\n \u003ctd\u003eStern Drive\u003c\/td\u003e\n \u003ctd\u003e1988 \u0026amp; up (SN: 0B664190 \u0026amp; up)\u003c\/td\u003e\n \u003ctd\u003e30-803100T1, 8M0095485\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003eStern Drive\u003c\/td\u003e\n \u003ctd\u003e1994–1995 (SN: 0D469859 \u0026amp; up)\u003c\/td\u003e\n \u003ctd\u003e30-803100T1, 8M0095485\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal\/Bellows Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eOEM or Aftermarket Replacement\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene, Metal (Gimbal Bearing)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (Aftermarket)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (86840A05)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows Assembly (18654A1)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Tube Assembly (78458A1)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Bellows Assembly (74639A2)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Gimbal Bearing Assembly (30-862540A3)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e1 x Water Inlet Hose (32-43437)\u003c\/li\u003e\n \u003cli\u003e1 x Bravo Installation Kit (16755Q1)\u003c\/li\u003e\n \u003cli\u003e1 x Set of Bellows Clamps and Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and trim the drive to the full \"up\" position.\u003c\/li\u003e\n \u003cli\u003eRemove the drive assembly from the bell housing.\u003c\/li\u003e\n \u003cli\u003eCarefully cut and remove the old U-joint, exhaust, and shift cable bellows, noting clamp positions.\u003c\/li\u003e\n \u003cli\u003eInspect the gimbal housing for wear or damage and remove the old gimbal bearing.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing using an appropriate driver tool.\u003c\/li\u003e\n \u003cli\u003eInstall the new shift cable bellow, ensuring a tight seal.\u003c\/li\u003e\n \u003cli\u003eInstall the new exhaust and U-joint bellows, securing all clamps tightly.\u003c\/li\u003e\n \u003cli\u003eInstall the new water inlet hose.\u003c\/li\u003e\n \u003cli\u003eReinstall the drive assembly, checking for proper alignment and shift cable operation.\u003c\/li\u003e\n \u003cli\u003eLower the drive and test for leaks in a controlled environment before open water use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this kit fits my Bravo drive?\u003c\/summary\u003e\n \u003cp\u003eThis kit fits MerCruiser Bravo I, II, and III models from 1988 and newer with a serial number of 0B664190 and higher. It also fits Blackhawk drives from 1994-1995 (SN 0D469859+). Always verify your serial number to ensure compatibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs my transom bellows need replacing?\u003c\/summary\u003e\n \u003cp\u003eCommon failure signs include visible cracks or tears in the rubber, water entering the bilge area, a stiff or noisy gimbal bearing, or difficulty shifting. Regular inspection during maintenance is the best way to catch wear early.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should transom bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance item, most manufacturers recommend replacing bellows every 3-5 years, depending on usage and whether the boat is in fresh or saltwater. The gimbal bearing should be inspected at the same time and replaced if it feels rough or noisy.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between a greasable and sealed gimbal bearing?\u003c\/summary\u003e\n \u003cp\u003eA greasable bearing has a fitting that allows you to add grease periodically, which can extend its life if done correctly. A sealed bearing is pre-lubricated for its entire service life and requires no maintenance. This kit includes a high-quality sealed bearing for reliability and ease of use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs it normal to have a small amount of water in the bellows area?\u003c\/summary\u003e\n \u003cp\u003eNo, the bellows are designed to create a watertight seal. Any water intrusion indicates a leak that must be addressed immediately to prevent catastrophic damage to the gimbal bearing, U-joints, and transom assembly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887430971,"sku":"18B5001","price":80.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Transom_Bellows_Kit_with_Gimbal_Bearing_for_MerCruiser_Bravo_1_2_3_1988_and_UP________30-803100T1_-_JLM_MARINE-8287654.jpg?v=1762937408"},{"product_id":"transom-bellows-repair-kit-fits-mercruiser-alpha-one-gen-1-r-mr-ss-sterndrives-replaces-30-803097t1","title":"Transom Bellows Repair Kit – Fits MerCruiser Alpha One Gen 1, R, MR \u0026 SS Sterndrives (Replaces 30-803097T1)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis complete \u003cstrong\u003eTransom Bellows Repair Kit\u003c\/strong\u003e is designed for MerCruiser R, MR, Alpha One (Gen 1), and Alpha One SS sterndrive models manufactured from 1983 to 1990. It provides all the necessary seals, bellows, bearings, and gaskets for a comprehensive transom service, ensuring a secure and water-tight seal for your sterndrive assembly.\u003c\/p\u003e\n \u003cp\u003eThis kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury\/MerCruiser 30-803097T1, Sierra 18-2601-1, and GLM 21950, offering a reliable alternative for maintenance and repairs.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eIncludes all essential components for a full bell housing and gimbal bearing service.\u003c\/li\u003e\n \u003cli\u003eBellows are constructed from durable neoprene rubber with stainless steel clamping hardware.\u003c\/li\u003e\n \u003cli\u003eInstallation requires removal of the engine and sterndrive unit.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2601-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8213\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21950\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAMIC\u003c\/td\u003e\n \u003ctd\u003e32A40\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72902\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eFor MerCruiser models, please verify your sterndrive's serial number to ensure correct fitment as specified in the notes.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eSerial #6225577 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eMR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eSerial #6225577 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One (Gen 1)\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eSerial #6225577 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One SS\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1986–1989\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eSerial #0A545004 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Bellows\/Seal Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement, requires engine\/drive removal\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber (bellows) with stainless steel components\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e2.27 kg (5 lbs) approximate\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eOEM fitment to transom assembly\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eStainless steel hose clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer (typically 1 year)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes complete bell housing and gimbal bearing service components\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows with clamps (60932A4)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows with clamps (18654A1)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Bellows with clamps (74639)\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Bearing (30-60792A4)\u003c\/li\u003e\n \u003cli\u003e1 x Water Hose 3\/4\" (32-41725)\u003c\/li\u003e\n \u003cli\u003e1 x Water Hose 5\/8\" (32-32461)\u003c\/li\u003e\n \u003cli\u003e1 x Gasket Kit (27-94996T2) including:\n \u003cul\u003e\n \u003cli\u003e1 x Bell Housing Gasket\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring (25-33504)\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring (25-35027)\u003c\/li\u003e\n \u003cli\u003e2 x O-Rings (25-25439)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Guide (43433)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Insert (14705)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Wrapping (38473)\u003c\/li\u003e\n \u003cli\u003e1 x Bell Housing Shaft Lever (45518A3)\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Housing Oil Seal (26-88416)\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Housing Seal (41802)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the battery and follow all safety precautions before starting work.\u003c\/li\u003e\n \u003cli\u003eRemove the sterndrive unit from the transom assembly according to the manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eRemove the engine from the engine bay to gain access to the bell housing.\u003c\/li\u003e\n \u003cli\u003eCarefully detach the old bellows, gimbal bearing, hoses, and seals from the transom assembly.\u003c\/li\u003e\n \u003cli\u003eClean all mounting surfaces thoroughly to remove old sealant, corrosion, and debris.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing using an appropriate bearing driver.\u003c\/li\u003e\n \u003cli\u003eInstall the new bellows (U-joint, exhaust, shift cable) and secure them with the provided clamps. Ensure all seals are correctly seated.\u003c\/li\u003e\n \u003cli\u003eInstall all new gaskets, o-rings, and water hoses included in the kit.\u003c\/li\u003e\n \u003cli\u003eReinstall the bell housing and engine, torquing all fasteners to the manufacturer's specifications.\u003c\/li\u003e\n \u003cli\u003eReinstall the sterndrive, ensuring the shift cable and driveshaft are correctly aligned.\u003c\/li\u003e\n \u003cli\u003eOnce assembled, check for leaks in a controlled environment before full operation.\u003c\/li\u003e\n \u003cli\u003eIt is highly recommended to consult a qualified marine mechanic and your specific service manual for detailed procedures.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if my transom bellows need replacing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks or tears in the rubber, water entering the bilge area (especially when turning or trimming the drive), or a grinding\/roaring noise from the gimbal bearing, which indicates water intrusion and bearing failure.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWill this kit fit an Alpha One Gen 2 drive?\u003c\/summary\u003e\n \u003cp\u003eNo, this kit is specifically for the models listed, including Alpha One Gen 1 (1983–1990). Gen 2 drives use different components and require a different service kit.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs removing the engine absolutely necessary for this installation?\u003c\/summary\u003e\n \u003cp\u003eYes, for a complete service that includes replacing all components in this kit, such as the gimbal bearing and bell housing gaskets, removal of the engine is required to access the transom assembly.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval for these components?\u003c\/summary\u003e\n \u003cp\u003ePreventative replacement is recommended every 3-5 years for boats used in saltwater and 5-7 years for freshwater use, depending on usage and storage conditions. Always perform an annual inspection for cracking or wear.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between this and an OEM kit?\u003c\/summary\u003e\n \u003cp\u003eOur aftermarket kit is designed to meet or exceed OEM specifications for fit, form, and function, using comparable high-quality materials. It offers a cost-effective solution for transom repair without compromising on durability.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eMy serial number is close but doesn't match the range. Will it fit?\u003c\/summary\u003e\n \u003cp\u003eIt is critical to match the serial number range exactly as specified. MerCruiser made changes at specific serial number breaks. If your number is outside the listed range, this kit may not be compatible. Please verify before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887529275,"sku":"3022-32A4-001","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/3022-32A4-001.png?v=1762937413"},{"product_id":"mercruiser-alpha-gen-1-bellows-repair-kit-fits-r-mr-alpha-one-1983-1990-sterndrives-replaces-30-803097t1","title":"MerCruiser Alpha Gen 1 Bellows Repair Kit – Fits R, MR, Alpha One (1983-1990) Sterndrives (Replaces 30-803097T1)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis is a complete, OEM-quality \u003cstrong\u003eMerCruiser Alpha Gen 1 Bellows Repair Kit\u003c\/strong\u003e designed for R, MR, and Alpha One Generation 1 sterndrives manufactured from approximately 1976 to 1990. The kit provides all essential seals and bearings to restore the transom assembly, preventing water intrusion and ensuring reliable operation.\u003c\/p\u003e\n \u003cp\u003eThis kit serves as a direct replacement for Mercury\/MerCruiser part 30-803097T1 and interchanges with Sierra 18-8213, 18-2601, and GLM 21950.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eEngineered for direct OEM-replacement fitment.\u003c\/li\u003e\n \u003cli\u003eIncludes a complete bellows kit with a new gimbal bearing.\u003c\/li\u003e\n \u003cli\u003eComes with both 3\/4\" and 5\/8\" water hoses for broad compatibility.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8213\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2601\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21950\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eThis kit is designed specifically for pre-Alpha and Alpha series MerCruiser sterndrives within the specified serial number ranges.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR Drive\u003c\/td\u003e\n \u003ctd\u003e1976–1983\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003ePre-Alpha One\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eMR Drive\u003c\/td\u003e\n \u003ctd\u003e1976–1983\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003ePre-Alpha One\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eS\/N 6225577 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One SS\u003c\/td\u003e\n \u003ctd\u003e1986–1989\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eS\/N OA545004 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal\/Bellows Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eCompatibility\u003c\/dt\u003e\n\u003cdd\u003eR, MR, Alpha 1 (1983–90) S\/N 6225577 \u0026amp; UP, Alpha 1 SS (1986–89) S\/N OA545004 \u0026amp; UP\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber\u003c\/dd\u003e\n \u003cdt\u003eIncluded Components\u003c\/dt\u003e\n\u003cdd\u003eComplete bellows kit with gimbal bearing\u003c\/dd\u003e\n \u003cdt\u003eWater Hose Size\u003c\/dt\u003e\n\u003cdd\u003eIncludes both 3\/4\" and 5\/8\" hoses\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x U-Joint bellows assembly\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows\u003c\/li\u003e\n \u003cli\u003e1 x Transom bell housing gasket set\u003c\/li\u003e\n \u003cli\u003e1 x Water intake hoses (\u003cspan style=\"color:#d0021b;\"\u003eboth 3\/4\" and 5\/8\" sizes\u003c\/span\u003e)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Bellows\u003c\/li\u003e\n \u003cli\u003e1 x \u003cspan style=\"color:#d0021b;\"\u003eGimbal Bearing\u003c\/span\u003e\n\u003c\/li\u003e\n \u003cli\u003e1 x Set of stainless steel hose clamps as required\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the battery and place the sterndrive in the full \"up\" (trailer) position.\u003c\/li\u003e\n \u003cli\u003eRemove the sterndrive assembly according to your official service manual's procedure.\u003c\/li\u003e\n \u003cli\u003eCarefully cut and remove the old U-joint, exhaust, and shift cable bellows and their clamps.\u003c\/li\u003e\n \u003cli\u003eRemove the old gimbal bearing from the transom housing using a slide hammer or puller tool.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean all mating surfaces on the bell housing and transom assembly, removing any old sealant or debris.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing using an appropriate driver, ensuring it is seated correctly.\u003c\/li\u003e\n \u003cli\u003eFit the new U-joint, exhaust, and shift bellows, securing them with the new stainless steel clamps. Ensure they are fully seated and sealed.\u003c\/li\u003e\n \u003cli\u003eChoose and install the correct water hose (3\/4\" or 5\/8\") for your specific transom assembly.\u003c\/li\u003e\n \u003cli\u003eReinstall the outdrive, carefully aligning the driveshaft and shift linkage. Torque all fasteners to the manufacturer's specified values.\u003c\/li\u003e\n \u003cli\u003eAfter reassembly, lower the drive, reconnect the battery, and test for any water leaks in a controlled environment before full operation.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if this kit fits my sterndrive?\u003c\/summary\u003e\n \u003cp\u003eThis kit fits MerCruiser R, MR, Alpha One (Gen 1) drives from 1983–1990 (Serial Number 6225577 \u0026amp; up), and Alpha One SS drives from 1986–1989 (S\/N OA545004 \u0026amp; up). Always check your drive's model and serial number against the compatibility list before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs my bellows need replacing?\u003c\/summary\u003e\n \u003cp\u003eThe most common signs of failing bellows are visible cracking, tearing, or dry-rot in the rubber. Other indicators include water entering your boat's bilge area or a rumbling\/grinding noise from the transom, which often signals a failed gimbal bearing due to water intrusion.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should sterndrive bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eFor preventative maintenance, it is recommended to inspect bellows annually for any signs of wear or damage. Full replacement is advised every 3–5 years, depending on usage frequency, storage conditions, and whether the boat is used in saltwater or freshwater.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhy are two different water hose sizes included?\u003c\/summary\u003e\n \u003cp\u003eDuring the production years covered by this kit, MerCruiser used both 3\/4\" and 5\/8\" inner diameter water intake hoses on their transom assemblies. We include both to ensure you have the correct size for your specific drive without needing a separate purchase.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717887562043,"sku":"17B3005+铰链销","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Transom_Seal_Bearing_Bellows_Kit_with_Hinge_Pin_Tool_for_MerCruiser_Alpha_1_Gen_1_and_R_MR_Alpha_one_SS_Sterndrive___________30-803097T1_-_JLM_MARINE-8287619.jpg?v=1762937415"},{"product_id":"bellow-ring-installation-tool-fits-mercury-mercruiser-alpha-1-gen-2-bravo-blackhawk-replaces-91-818162","title":"Bellow Ring Installation Tool – Fits Mercury MerCruiser Alpha 1 Gen 2, Bravo, Blackhawk (Replaces 91-818162)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eBellow Ring Installation Tool\u003c\/strong\u003e is essential for servicing Mercury MerCruiser stern drives, including Alpha One Gen 2, Bravo series, and Blackhawk models. It is specifically designed to properly install the aluminum retainer ring into the U-joint bellows, ensuring a secure fit without damaging the components. This tool must be used in conjunction with an Engine Alignment Tool for correct installation.\u003c\/p\u003e\n\u003cp\u003eThis part is a direct replacement for Mercury MerCruiser OEM part 91-818162 and aftermarket references such as Sierra 18-9870 and MBSMFG BRSIT-D23.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls the U-joint bellows aluminum retainer ring.\u003c\/li\u003e\n\u003cli\u003eRequires manual use with an alignment tool and light hammer taps.\u003c\/li\u003e\n\u003cli\u003eAvailable in durable PVC Plastic or Aluminum, depending on the selected option.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-9870\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMBSMFG\u003c\/td\u003e\n \u003ctd\u003eBRSIT-D23\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis tool is confirmed for use on the following Mercury MerCruiser drive units.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eU-Joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eU-Joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eU-Joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eVazer\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003ePer MercruiserParts.com source\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eInstallation Tool\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual; requires light hammer taps\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003ePVC Plastic (aftermarket) or Aluminum (OEM\/aftermarket options)\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack or Silver (depending on material)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eUsed with Engine Alignment Tool to properly install aluminum ring into U-joint bellows\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Bellow Retainer Ring Installation Tool (91-818162)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the drive is properly prepared and an Engine Alignment Tool is correctly in place.\u003c\/li\u003e\n\u003cli\u003eApply a suitable marine-grade lubricant to the U-joint bellows and the new aluminum retainer ring.\u003c\/li\u003e\n\u003cli\u003eCarefully position the retainer ring over the end of the bellows.\u003c\/li\u003e\n\u003cli\u003ePlace the Bellow Ring Installation Tool over the retainer ring.\u003c\/li\u003e\n\u003cli\u003eUsing a mallet or hammer, apply light, even taps to the installation tool to drive the ring into its groove.\u003c\/li\u003e\n\u003cli\u003eContinue tapping around the tool until the ring is fully and evenly seated.\u003c\/li\u003e\n\u003cli\u003eVisually inspect the ring to confirm it is secure and has not damaged the bellows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich sterndrives is this tool designed for?\u003c\/summary\u003e\n\u003cp\u003eThis tool fits Mercury MerCruiser Alpha One Gen 2, Bravo Series (I, II, III), Blackhawk, and Vazer drives. It is essential for working on the U-joint bellows for these models.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I actually need this tool for the installation?\u003c\/summary\u003e\n\u003cp\u003eYes. This tool is specifically designed to install the aluminum retainer ring evenly and without damage. Attempting the installation without it can lead to a damaged bellows or a poor seal, causing water leaks and gimbal bearing failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs there a difference between the PVC and aluminum versions?\u003c\/summary\u003e\n\u003cp\u003eThe original OEM tool is typically made of aluminum. Aftermarket versions are available in both high-strength PVC and aluminum. Both materials are durable and designed to perform the installation correctly. The PVC version offers excellent value and corrosion resistance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the signs of a failed bellows retaining ring?\u003c\/summary\u003e\n\u003cp\u003eThe primary symptom of a failed or improperly installed retaining ring is water intrusion into the gimbal area. This can lead to a rusted gimbal bearing, which often produces a grinding or roaring noise when turning the wheel, especially out of the water.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717889102139,"sku":"21BR001","price":20.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Bellow_Retainer_Ring_installer_for_Mercury_MerCruiser_Engines_______91-818162_-_JLM_MARINE-8287031.jpg?v=1762937467"},{"product_id":"exhaust-bellows-expander-tool-fits-mercruiser-alpha-one-alpha-gen-ii-bravo-blackhawk-drive-units-replaces-91-45497a1-91-8m0096108","title":"Exhaust Bellows Expander Tool – Fits MerCruiser Alpha One, Alpha Gen II, Bravo \u0026 Blackhawk Drive Units (Replaces 91-45497A1, 91-8M0096108)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis specialized **Exhaust Bellows Expander Tool** is designed for the proper installation of exhaust bellows on a wide range of MerCruiser stern drive units. It is compatible with MC-1\/R\/MR, Alpha One, Alpha One Gen II, Bravo (I, II, III), and Blackhawk drive units, ensuring a precise fit and seal.\u003c\/p\u003e\n\u003cp\u003eThis tool is a direct replacement for Mercury MerCruiser part numbers 91-45497A1 and 91-8M0096108.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for manual mechanical operation.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable steel for long service life.\u003c\/li\u003e\n\u003cli\u003eFeatures a scissor handle with a vinyl grip and secure screw lock mechanism.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003e91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis tool is designed for use with the following Mercury MerCruiser stern drive units.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eDrive Type\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1998 and up\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMC-1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eR\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMR\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAlpha One\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBravo One\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBravo Two\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBravo Three\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBravo X (I, II, III)\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e91-45497A1, 91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Expander Tool\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual mechanical operation\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eSteel\u003c\/dd\u003e\n \u003cdt\u003eDesign\u003c\/dt\u003e\n\u003cdd\u003eScissor handle with vinyl grip \u0026amp; screw lock\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eOpens with screw lock mechanism\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows Expander Tool (91-45497A1\/91-8M0096108)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off, cool, and the drive is tilted to a safe, accessible position.\u003c\/li\u003e\n \u003cli\u003ePosition the new exhaust bellow onto the bell housing exhaust outlet.\u003c\/li\u003e\n \u003cli\u003eInsert the expander tool fully into the open end of the bellow.\u003c\/li\u003e\n \u003cli\u003eSlowly turn the screw handle to expand the tool, stretching the bellow just enough to slide over the exhaust tube lip on the gimbal housing.\u003c\/li\u003e\n \u003cli\u003eOnce the bellow is correctly seated in its groove, secure it with the designated clamp and torque to manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003eCarefully loosen the screw handle on the tool to contract it, then remove it from the drive.\u003c\/li\u003e\n \u003cli\u003eDouble-check that the bellow is secure, properly aligned, and tightly sealed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is this tool used for?\u003c\/summary\u003e\u003cp\u003eThis tool is specifically designed to expand the exhaust bellows for easier installation on MerCruiser stern drives. It holds the bellow open, allowing it to be correctly seated without damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this tool work on a Bravo III drive?\u003c\/summary\u003e\u003cp\u003eYes, it is compatible with Bravo I, II, and III drives, as well as Alpha One (Gen I and II), MC-1, R, MR, and Blackhawk units.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow does the screw lock mechanism work?\u003c\/summary\u003e\u003cp\u003eThe screw lock allows for gradual and controlled expansion of the tool's arms. This prevents over-stretching or damaging the new bellow and holds it securely in the expanded position during installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs it difficult to use for a DIY installation?\u003c\/summary\u003e\u003cp\u003eWhile the tool simplifies the process, installing bellows can be challenging due to tight access. It requires care to ensure a proper seal. We recommend professional installation if you are not experienced with stern drive maintenance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cb\u003ePro-Grade Standards\u003c\/b\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cb\u003eFast Global Fulfillment\u003c\/b\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cb\u003eManufacturer-Direct Value\u003c\/b\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717889167675,"sku":"22ET001","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Exhaust_Bellows_Expander_Tool_for_Mercury_MerCruiser_Stern_Drive_Engines___91-45497A1_-_JLM_MARINE-8287026.jpg?v=1762937469"},{"product_id":"exhaust-bellows-fits-mercruiser-v6-v8-engines-replaces-32-14358t-32-14358001","title":"Exhaust Bellows – Fits MerCruiser V6\/V8 Engines (Replaces 32-14358T, 32-14358001)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eExhaust Bellows – Fits MerCruiser V6\/V8 Engines (Replaces 32-14358T, 32-14358001)\u003c\/strong\u003e is designed for MerCruiser V6 and V8 engines from 1987 and newer. It creates a critical seal, connecting the exhaust elbow after the riser to the Y-pipe to prevent water intrusion and exhaust leaks.\u003c\/p\u003e\n\u003cp\u003eThis part offers a direct interchange for Sierra 18-2746, GLM 89130, and Mallory 9-72811, ensuring a precise fit and reliable performance.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eInstalls directly using the included stainless steel hose clamps.\u003c\/li\u003e\n \u003cli\u003eConstructed from marine-grade rubber with UV inhibitors for durability in harsh saltwater and freshwater environments.\u003c\/li\u003e\n \u003cli\u003eFeatures a flexible, accordion-style wall design to absorb engine vibration and movement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser (OEM)\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser (OEM)\u003c\/td\u003e\n \u003ctd\u003e32-14358001\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2746\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89130\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72811\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model and year in the tables below. This part is designed for a wide range of MerCruiser power systems.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eV6\/V8 w\/Center Rise\u003c\/td\u003e\n \u003ctd\u003e-\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eElbow to Y-Pipe\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e4.3L TKS\u003c\/td\u003e\n \u003ctd\u003e190 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003e-\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e4.3L LX\u003c\/td\u003e\n \u003ctd\u003e190 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003e2BBL Carburetor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e4.3L LXH\u003c\/td\u003e\n \u003ctd\u003e205 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003e4BBL Carburetor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e4.3L MPI \u0026amp; MPI ECT\u003c\/td\u003e\n \u003ctd\u003e220 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eMulti-Point Injection\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e4.3L Alpha 4V\u003c\/td\u003e\n \u003ctd\u003e225 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003e-\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e262 MAG TBI\u003c\/td\u003e\n \u003ctd\u003e205 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eThrottle Body Injection\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e5.0L (305 CID) V8\u003c\/td\u003e\n \u003ctd\u003e220–260 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eAll variants\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e5.7L (350 CID) V8\u003c\/td\u003e\n \u003ctd\u003e270–300 HP\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eIncluding TKS, EFI, TBI, MPI variants\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e7.4L (454 CID) V8\u003c\/td\u003e\n \u003ctd\u003e-\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eMAG and MPI versions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e8.2L (502 CID) V8\u003c\/td\u003e\n \u003ctd\u003e-\u003c\/td\u003e\n \u003ctd\u003e1987–Up\u003c\/td\u003e\n \u003ctd\u003e32-14358T\/32-14358001\u003c\/td\u003e\n \u003ctd\u003eHigh-performance applications\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top:1.5rem;\"\u003eThis exhaust bellows is also compatible with the following MerCruiser drive units:\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible Drive Units\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Generation 1\u003c\/td\u003e\n \u003ctd\u003e1982–1990\u003c\/td\u003e\n \u003ctd\u003eFits most models from 1987 onwards; check your specific setup for 1982-1986.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Generation 2\u003c\/td\u003e\n \u003ctd\u003e1991–Present\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo 1, Bravo 2, Bravo 3\u003c\/td\u003e\n \u003ctd\u003eAll Years\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eLower Exhaust Bellows\/Boot\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement with hose clamps\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber with UV inhibitors\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e4\" (101.6 mm) inner diameter, oval shape\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.77 lbs (350 g)\u003c\/dd\u003e\n \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e14.5 x 14.5 x 14 CM\u003c\/dd\u003e\n \u003cdt\u003eConfiguration\u003c\/dt\u003e\n\u003cdd\u003eCenter rise, oval shape\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eClamp-style with stainless steel clamps\u003c\/dd\u003e\n \u003cdt\u003eOther Attributes\u003c\/dt\u003e\n\u003cdd\u003eFlexible, accordion-style wall construction\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1-year against manufacturing defects\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows\/Boot (Replaces 32-14358T)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Stainless Steel Clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the engine is cool. Position the sterndrive in the full-tilt position for access.\u003c\/li\u003e\n \u003cli\u003eLocate the lower exhaust bellows between the exhaust elbow and the Y-pipe.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the two hose clamps securing the old bellows. A specialized bellows clamp tool may be required.\u003c\/li\u003e\n \u003cli\u003eCarefully pry the old bellows off both connection points and clean the surfaces of any residue or corrosion.\u003c\/li\u003e\n \u003cli\u003eFit the new bellows into position, ensuring it is seated correctly on both the elbow and Y-pipe.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellows with the provided stainless steel clamps, tightening them to the manufacturer's specified torque to create a durable, watertight seal.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this exhaust bellows will fit my engine?\u003c\/summary\u003e\n \u003cp\u003eThe best method is to verify your engine model and year against the compatibility table. Also, compare the OEM part numbers (32-14358T, 32-14358001) with your existing part or service manual. Visually matching the part to our photos is a good final check.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my current exhaust bellows is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks or holes in the rubber, water in the bilge area (especially after running the engine), or an unusually loud exhaust sound. Regular inspection during maintenance is key to catching issues early.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the exhaust bellows be inspected or replaced?\u003c\/summary\u003e\n \u003cp\u003eIt is recommended to inspect all bellows (exhaust, u-joint, and shift cable) annually or every 100 hours of operation. Full replacement is typically recommended every 3-5 years, depending on usage (saltwater vs. freshwater) and storage conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan a leaky exhaust bellows cause major damage?\u003c\/summary\u003e\n \u003cp\u003eYes. A significant leak can allow water to enter the engine bay and potentially flood the bilge, which could damage electrical components or even sink the vessel if left unattended. It can also cause the engine to overheat.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this part for the exhaust or the driveshaft?\u003c\/summary\u003e\n \u003cp\u003eThis part is the lower exhaust bellows, which carries exhaust gases. It is different from the U-joint (driveshaft) bellows, which protects the universal joints from water. Both are critical components and should be inspected together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890314555,"sku":"17B1001","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B1001_e9b22fc0-07e9-4ac8-a232-b33bb7a21294.jpg?v=1762937490"},{"product_id":"u-joint-bellows-fits-mercruiser-bravo-blackhawk-drives-replaces-86840a05-8m0062406","title":"U-Joint Bellows – Fits MerCruiser Bravo \u0026 Blackhawk Drives (Replaces 86840A05, 8M0062406)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eMerCruiser Bravo U-Joint Bellows\u003c\/strong\u003e is designed to protect the U-joint and driveshaft assembly on MerCruiser Bravo and Blackhawk sterndrives. It fits Bravo I, Bravo II, Bravo III, and Blackhawk models from 1988 and newer, creating a crucial seal as the drive shaft passes through the transom.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct cross-reference for multiple OEM and aftermarket part numbers, including Sierra 18-2756, GLM 89140, Mallory Marine 9-72702, and Mercury 86840A05 \/ 8M0062406.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for direct, hassle-free installation.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable neoprene rubber to resist oil, saltwater, and abrasion.\u003c\/li\u003e\n\u003cli\u003eIncludes the necessary stainless steel hose clamps for a secure fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e86840A05\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0062406\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-2756\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e89140\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory Marine\u003c\/td\u003e\n\u003ctd\u003e9-72702\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part is designed exclusively for the MerCruiser sterndrive models listed below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo I\u003c\/td\u003e\n\u003ctd\u003e1988–Present\u003c\/td\u003e\n\u003ctd\u003e86840A05\/8M0062406\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo II\u003c\/td\u003e\n\u003ctd\u003e1988–Present\u003c\/td\u003e\n\u003ctd\u003e86840A05\/8M0062406\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo III\u003c\/td\u003e\n\u003ctd\u003e1988–Present\u003c\/td\u003e\n\u003ctd\u003e86840A05\/8M0062406\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBlackhawk\u003c\/td\u003e\n\u003ctd\u003e1988–Present\u003c\/td\u003e\n\u003ctd\u003e86840A05\/8M0062406\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber\u003c\/dd\u003e\n \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDesign\u003c\/dt\u003e\n\u003cdd\u003eRidge design for improved sealing\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSeals drive shaft as it passes through the transom\u003c\/dd\u003e\n \u003cdt\u003eBox Dimensions\u003c\/dt\u003e\n\u003cdd\u003e15cm x 15.5cm x 16cm\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eManufacturer warranty\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (Replaces 86840A05\/8M0062406)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Stainless Steel Hose Clamp\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the vessel's battery for safety.\u003c\/li\u003e\n \u003cli\u003eTilt the sterndrive to the full \"up\" or \"trailer\" position to access the bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old hose clamps and cut away the old, damaged bellows.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the bell housing and transom assembly.\u003c\/li\u003e\n \u003cli\u003eFit the new U-joint bellows into position, ensuring it is seated correctly on both ends.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellows with the provided stainless steel hose clamps. Tighten firmly but do not overtighten.\u003c\/li\u003e\n \u003cli\u003eLower the sterndrive and inspect the new installation for proper alignment and sealing.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery and test the sterndrive's function in the water, checking for any leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my U-joint bellows needs replacing?\u003c\/summary\u003e\u003cp\u003eInspect the bellows regularly for cracks, splits, or brittleness. Any sign of water inside the bellows or grease leaking out indicates an immediate need for replacement to prevent catastrophic U-joint failure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if a U-joint bellows fails?\u003c\/summary\u003e\u003cp\u003eA failed bellows will allow water to enter the sterndrive, quickly destroying the U-joints and gimbal bearing. This can lead to a complete loss of propulsion and costly repairs.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\u003cp\u003eAs a preventative maintenance item, it's wise to inspect your bellows annually and replace it every 3–5 years, or immediately if any damage is found, regardless of age.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this bellows compatible with all Bravo drives?\u003c\/summary\u003e\u003cp\u003eIt's designed for a wide range of MerCruiser Bravo and Blackhawk drives, typically from 1988 onward. Due to manufacturing variations, always double-check that your drive model and year fall within this range and visually compare the old part to our photos.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards:\u003c\/strong\u003e We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment:\u003c\/strong\u003e Free standard delivery to most regions, typically arriving in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value:\u003c\/strong\u003e Fair pricing on quality components without the retail markup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890347323,"sku":"17B1006","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B1006_826d5249-a132-4fd1-b1c8-d5c458c5ccfc.jpg?v=1762937492"},{"product_id":"u-joint-bellows-kit-fits-volvo-penta-sx-dp-series-replaces-23075752-22197130-3841481","title":"U-Joint Bellows Kit – Fits Volvo Penta SX \u0026 DP Series (Replaces 23075752, 22197130, 3841481)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003eU-Joint bellows kit\u003c\/strong\u003e is designed for a wide range of Volvo Penta sterndrive models, including the SX-series and DP-series manufactured from 1986 and later. It serves as a crucial component for protecting the U-joint from water and debris, ensuring the longevity and performance of your sterndrive system.\u003c\/p\u003e\n\u003cp\u003eIt provides a direct interchange for Volvo Penta part numbers 23075752, 22197130, and 3841481, as well as OMC part numbers 3854127, 987467, and 983973.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered as a direct replacement for hassle-free installation.\u003c\/li\u003e\n\u003cli\u003eConstructed from a modern, durable plastic with flexible rubber ends.\u003c\/li\u003e\n\u003cli\u003eThe kit includes the U-Joint bellows and a necessary hose clamp for a complete seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3841481\u003c\/td\u003e\n \u003ctd\u003e22197130\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e22197130\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003eCurrent Part Number\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e983973\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e987467\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\/Volvo Penta\u003c\/td\u003e\n \u003ctd\u003e3854127\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis bellows fits various Volvo Penta sterndrives from 1986 and later.\u003c\/p\u003e\n\u003cp\u003eThis bellows is also compatible with OMC Cobra sterndrives from 1986–1993.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eDrive Type\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-S, SX-C, SX-R, SX-M, SX-A\u003c\/td\u003e\n \u003ctd\u003eSterndrive\u003c\/td\u003e\n \u003ctd\u003e1986 and later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eSupersedes 22197130 and 3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S, DP-SM, DP-S1, DPS-A, DPS-B, DPS-B1\u003c\/td\u003e\n \u003ctd\u003eSterndrive\u003c\/td\u003e\n \u003ctd\u003e1986 and later\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eSupersedes 22197130 and 3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003eSterndrive\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e983973, 987467\u003c\/td\u003e\n \u003ctd\u003eFits Clutch Dog Cobra Models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/flexible plastic with rubber ends\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e15 x 15.5 x 16 CM (Box)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eManufacturer standard warranty\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes hose clamp and installation instructions\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (Replaces 23075752, 22197130, 3841481)\u003c\/li\u003e\n \u003cli\u003e1 x Hose Clamp\u003c\/li\u003e\n \u003cli\u003e1 x Installation Instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and disconnect the battery for safety.\u003c\/li\u003e\n \u003cli\u003eTrim the sterndrive to the full \"up\" or \"trailer\" position to access the bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old hose clamps and slide the old bellows off the transom assembly and drive unit.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on both the drive and transom assembly to ensure a clean seal.\u003c\/li\u003e\n \u003cli\u003eInstall the new bellows onto the transom housing first, ensuring it is properly seated.\u003c\/li\u003e\n \u003cli\u003eSecure the bellows to the transom assembly with the provided new hose clamp.\u003c\/li\u003e\n \u003cli\u003eStretch and attach the other end of the bellows to the sterndrive unit.\u003c\/li\u003e\n \u003cli\u003eSecure the drive-side of the bellows with its clamp and tighten firmly.\u003c\/li\u003e\n \u003cli\u003eLower the drive unit and inspect the bellows for proper seating, folds, or kinks.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery once installation is confirmed to be correct.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWill this fit my specific sterndrive model?\u003c\/summary\u003e\n \u003cp\u003eThis kit is designed for a broad range of Volvo Penta SX and DP series drives from 1986 and later, as well as OMC Cobra drives from 1986-1993. Please consult the compatibility table and part number matrix to confirm an exact match for your equipment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing U-joint bellows?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks, splits, or perishing of the rubber\/plastic material. The most critical sign is water inside the bellows, which indicates a leak that can lead to catastrophic U-joint and gimbal bearing failure. Regular inspection is recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the U-joint bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance item, it is wise to inspect the bellows annually and replace it every 3-5 years, depending on usage (saltwater vs. freshwater) and storage conditions. It should be replaced immediately if any damage is found.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this bellows made of older rubber or the newer plastic material?\u003c\/summary\u003e\n \u003cp\u003eThis bellows is made from a modern, hard but flexible plastic with rubber ends, reflecting the updated material composition used in newer OEM parts for improved durability and longevity compared to older, all-rubber versions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between OEM and aftermarket parts?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement part, not an original equipment manufacturer (OEM) component. It is built to meet or exceed OEM-level specifications using comparable materials and is manufactured in an ISO 9002 certified facility with batch inspections for quality control.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free on our products, and expedited options may be available at checkout depending on your location.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal marine use. Should an issue arise, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890380091,"sku":"17B1009","price":34.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B1009_007b5233-4043-4854-953e-8f37d50bfbfa.jpg?v=1762937493"},{"product_id":"lower-exhaust-bellow-fits-mercruiser-v6-v8-stern-drives-replaces-32-14358t-32-14358001","title":"Lower Exhaust Bellow – Fits MerCruiser V6 \u0026 V8 Stern Drives (Replaces 32-14358T, 32-14358001)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eLower Exhaust Bellow\u003c\/strong\u003e is a 4-inch bent tube designed for MerCruiser V6 and V8 stern drive engines manufactured from 1986 and later. It is engineered to fit a wide range of Alpha and Bravo models that utilize a center rise exhaust system, ensuring a precise and reliable seal.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Mercury Marine parts 32-14358, 32-14358T, and 32-14358001, as well as Sierra 18-2746 and Mallory 9-72811.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct OEM-style replacement.\u003c\/li\u003e\n\u003cli\u003eMade from heavy-duty rubber for durability in marine environments.\u003c\/li\u003e\n\u003cli\u003eConnects to the exhaust system's center rise configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e32-14358\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003e32-14358001\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2746\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72811\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser applications, this bellow fits V6 and V8 stern drives from 1986 to present with a center rise exhaust configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eV6 Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eSuperseded by 32-14358001\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eV8 Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eSuperseded by 32-14358001\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e4.3L Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eCenter rise exhaust configuration\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e5.0L Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eCenter rise exhaust configuration\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e5.7L Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eCenter rise exhaust configuration\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e5.8L Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eCenter rise exhaust configuration\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e6.2L Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eCenter rise exhaust configuration\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e7.4L Stern Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–Present\u003c\/td\u003e\n \u003ctd\u003e32-14358T\u003c\/td\u003e\n \u003ctd\u003eCenter rise exhaust configuration\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eLower Exhaust Bellow (Bent Tube)\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003e4\" ID Oval Shape\u003c\/dd\u003e\n \u003cdt\u003eBox Dimensions\u003c\/dt\u003e\n\u003cdd\u003e26.5 × 17.5 × 14.5 cm\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eExhaust system center rise configuration\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eHeavy-duty rubber construction\u003c\/dd\u003e\n \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eOEM Compatibility\u003c\/dt\u003e\n\u003cdd\u003eMerCruiser V6 \u0026amp; V8 stern drives after 1986\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Lower Exhaust Bellow (Replaces 32-14358T\/32-14358001)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the drive is safely trimmed up and secured.\u003c\/li\u003e\n \u003cli\u003eLocate and remove the old lower exhaust bellow by loosening its clamps. Inspect the connection points for wear or corrosion.\u003c\/li\u003e\n \u003cli\u003eClean the mounting surfaces on the bell housing and exhaust pipe thoroughly to ensure a clean seal.\u003c\/li\u003e\n \u003cli\u003ePosition the new bellow, ensuring the bent orientation is correct for your application.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellow using four 5-inch hose clamps (not included). Tighten clamps securely but avoid over-torquing.\u003c\/li\u003e\n \u003cli\u003eLower the drive and check for proper alignment and sealing before operating the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm this bellow fits my engine?\u003c\/summary\u003e\u003cp\u003eVerify your engine is a MerCruiser V6 or V8 model from 1986 or newer with a center rise exhaust. Cross-reference your existing part number with those in the Part Number Matrix above for the surest fit.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing exhaust bellow?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include visible cracks or splits in the rubber, water entering the bilge area, or a noticeable increase in exhaust noise from the stern drive area.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre clamps included with this bellow?\u003c\/summary\u003e\u003cp\u003eNo, clamps are not included. This bellow requires four 5-inch hose clamps for a complete installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should this part be replaced?\u003c\/summary\u003e\u003cp\u003eExhaust bellows should be inspected annually for cracks, stiffness, or signs of wear. Replacement is typically recommended every 3-5 years or as part of routine stern drive service, depending on usage and water conditions (salt vs. fresh).\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between this and an OEM part?\u003c\/summary\u003e\u003cp\u003eThis is a high-quality aftermarket part manufactured to meet or exceed OEM specifications. It provides the same performance and fit as the original but at a more accessible price point.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould I replace any other parts at the same time?\u003c\/summary\u003e\u003cp\u003eIt is best practice to also inspect and, if necessary, replace the U-joint and shift cable bellows when servicing the exhaust bellow, as they have similar service lives and require disassembling the same general area.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890478395,"sku":"17B2001","price":38.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B2001_290a3fa2-304b-48c5-bfc7-97779483a3e8.jpg?v=1762937497"},{"product_id":"upper-exhaust-bellows-kit-fits-volvo-penta-omc-cobra-4-3-8-2l-replaces-3852696","title":"Upper Exhaust Bellows Kit – Fits Volvo Penta \u0026 OMC Cobra 4.3-8.2L (Replaces 3852696)","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n table.ss-table th {\n white-space:nowrap;\n word-break:normal;\n letter-spacing:normal;\n font-weight:600;\n background:#f8fafc;\n }\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eUpper Exhaust Bellows Kit\u003c\/strong\u003e connects the exhaust riser to the exhaust pipe in specific Volvo Penta and OMC Cobra stern drive engines. It is designed for V6 and V8 engines (4.3L, 5.0L, 5.7L, 5.8L, 7.4L, 8.1L, 8.2L) manufactured from approximately 1986–1998.\u003c\/p\u003e\n \u003cp\u003eThis kit is a direct replacement for Volvo Penta 3852696, OMC 913405, Sierra 18-2779, GLM 89224, and Mallory 9-72802.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eConnects the upper exhaust riser to the Y-pipe.\u003c\/li\u003e\n \u003cli\u003eMade from durable EPDM rubber to resist heat, oil, and ozone.\u003c\/li\u003e\n \u003cli\u003eIncludes two bellows and four marine-grade 316 stainless steel clamps.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2779\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89224\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72802\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model and year in the tables below.\u003c\/p\u003e\n \u003cp\u003eFor Volvo Penta engines, this bellows kit fits a wide range of V6 and V8 models from the late 1980s through the late 1990s, including popular GL, GS, Gi, and GXi series.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e4.3L GL\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding GL-A through GL-P models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e4.3L GS\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding GSPBYC, GSJBYA models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e4.3L Gi, GXi, OSi\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding GIPBYCCE models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.0L GL, GXi, OSi\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding GL-A through GL-JF, GXi-270-R through GXi-P, OSi-B through OSi-JF\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.7L Gi, GL, GS, GXi, OSi, OSXi\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding Gi-300-J through Gi-FF, GXi-320-R through GXiI-F\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e5.8L Fi, FL, FSi\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1988–1991\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding 5.8FiPNCMCE, 5.8FLPMDA, 5.8FLINCS models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e7.4L Gi, GL, GS\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding 7.4GiINCCCE, 7.4GLIMDM, 7.4GSiPBYCCE models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e8.1L Gi, GS, GXi, OSi\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding models 8.1Gi-B through 8.1OSiE-J\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e8.2L GL, GS\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003eIncluding 8.2GLIMDM, 8.2GSiPBYCCE models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDPX 375, 385, 415, 420\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-A, SX-M\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eV6 200, 225\u003c\/td\u003e\n \u003ctd\u003e200-225\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eV8 270, 300, 320, 350, 380, 430\u003c\/td\u003e\n \u003ctd\u003e270-430\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eXHP, XXP\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e3852696\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003cp\u003eFor OMC Cobra drives, this bellows fits V6 and V8 engines within the specified year range, including King Cobra models.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"OMC Cobra Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e4.3L GL, GS, GI, GXI, OSI\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e5.0L FI, GL, FL, GXI, OSI\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e5.7L GL, GI, GIL, OSI, GXI, OSXI\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e5.8L FL, FI, FSI\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e7.4L GL, GI\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e8.1L GI, GXI, OSI\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003e8.2L GL\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n \u003ctd\u003eKing 460 Drives\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1998\u003c\/td\u003e\n \u003ctd\u003e913405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eUpper exhaust connection (riser to exhaust pipe)\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eEPDM (Ethylene Propylene Diene Monomer) Rubber\u003c\/dd\u003e\n \u003cdt\u003eClamp Material\u003c\/dt\u003e\n\u003cdd\u003e316 Stainless Steel\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eDiameter (Large End): ~4 inches (101.6 mm)\u003cbr\u003eDiameter (Small End): ~3 inches (76.2 mm)\u003cbr\u003eExtended Length: ~6 inches (152.4 mm)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e873g\u003c\/dd\u003e\n \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e23 x 15.5 x 13 cm\u003c\/dd\u003e\n \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003e-40°C to +149°C (-40°F to +300°F)\u003c\/dd\u003e\n \u003cdt\u003eMax Pressure Rating\u003c\/dt\u003e\n\u003cdd\u003e15 PSI (1.03 bar)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1-year (aftermarket)\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Upper Exhaust Bellows (Replaces OEM P\/N 3852696)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e4 x\u003c\/span\u003e Stainless Steel Clamps (316 Marine Grade)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the engine is cool.\u003c\/li\u003e\n \u003cli\u003eLocate the upper exhaust bellows connecting the exhaust riser and the Y-pipe.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the old clamps securing the existing bellows. Use a penetrating oil if bolts are corroded.\u003c\/li\u003e\n \u003cli\u003eCarefully cut or pry the old bellows off both connection points. Clean the mounting surfaces on the riser and pipe thoroughly.\u003c\/li\u003e\n \u003cli\u003ePosition the new bellows over the pipe and riser. Ensure it is seated correctly and not twisted.\u003c\/li\u003e\n \u003cli\u003ePlace the new stainless steel clamps over each end of the bellows.\u003c\/li\u003e\n \u003cli\u003eTighten the clamps securely. Do not overtighten, as this can damage the rubber or clamp.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery. Run the engine and inspect for any exhaust leaks at the connections.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if my exhaust bellows needs replacing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks, splits, or perishing of the rubber. You may also hear an unusual exhaust noise from the engine bay or notice water leaking into the bilge, as a failed bellows can compromise the seal.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I reuse my old clamps?\u003c\/summary\u003e\n \u003cp\u003eIt is strongly recommended to use the new 316 stainless steel clamps provided. Old clamps may be corroded, weakened, or stretched, and will not provide a reliable seal.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this bellows for the upper or lower connection?\u003c\/summary\u003e\n \u003cp\u003eThis kit is for the upper exhaust connection, which links the exhaust riser to the Y-pipe. It is not the lower \"exhaust tube\" bellows that connects the Y-pipe to the gimbal housing.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n \u003cp\u003eExhaust bellows should be inspected annually for signs of wear and tear. A typical replacement interval is every 3-5 years, but this can vary based on usage (freshwater vs. saltwater) and environmental conditions.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eMy engine model is listed, but the year is slightly different. Will it fit?\u003c\/summary\u003e\n \u003cp\u003eThe year range (1986–1998) is a general guide. The most reliable way to confirm fitment is by matching the OEM part number (3852696 for Volvo Penta, 913405 for OMC). If you are unsure, verify with your engine's serial number before purchasing.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part before installation. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is highly recommended for safety, proper function, and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890543931,"sku":"17B2004","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B2004_e4aa8e3e-a0ba-4416-9975-f2b6dd6efe56.jpg?v=1762937498"},{"product_id":"exhaust-bellows-kit-fits-mercruiser-alpha-one-gen-1-2-bravo-replaces-18654a1-32734a3","title":"Exhaust Bellows Kit – Fits MerCruiser Alpha One Gen 1 \u0026 2, Bravo (Replaces 18654A1, 32734A3)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eExhaust Bellows Kit\u003c\/strong\u003e provides a crucial seal for MerCruiser sterndrives, including Alpha One Gen 1 (1983–1990), Alpha One Gen 2 (1991–Present), and Bravo I, II, \u0026amp; III models. Made from flexible, durable rubber, it connects the transom assembly to the bell housing, preventing water from entering the vessel.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for MerCruiser part numbers 18654A1 and 8M0124227, and interchanges with Sierra 18-2750, GLM 89100, and UANOFCN 32734A3.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures a ribbed design for enhanced flexibility during steering and trimming.\u003c\/li\u003e\n\u003cli\u003eConnects the transom plate to the bell housing for a watertight seal.\u003c\/li\u003e\n\u003cli\u003eIncludes the necessary worm gear clamps and grounding clips for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part number cross-reference matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e18654A1\u003c\/td\u003e\n \u003ctd\u003e8M0124227\u003c\/td\u003e\n \u003ctd\u003eOriginal OEM part.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e8M0124227\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003eCurrent OEM replacement.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e32734A3\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003eReferenced OEM part number.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2750\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003eAftermarket Equivalent\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89100\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003eAftermarket Equivalent\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eUANOFCN\u003c\/td\u003e\n \u003ctd\u003e32734A3\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003eAftermarket Equivalent\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible MerCruiser engine models\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen 1\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983–1990\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 6225577 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1991–Present\u003c\/td\u003e\n\u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 0D469859 \u0026amp; Up; Superseded to 8M0124227\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo I\/II\/III\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–Present\u003c\/td\u003e\n\u003ctd\u003e18654A1\/8M0124227\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 0B664190 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBlackhawk\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1995\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 0F186717 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eR \/ MR\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983–1990\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 6225577 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e120\/140\/160\/165\u003c\/td\u003e\n\u003ctd\u003e120-165\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1972–1982\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 3469428-6225576\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e225\/233\u003c\/td\u003e\n\u003ctd\u003e225-233\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1974–1977\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 3856268 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e898\/228\/250\/260\u003c\/td\u003e\n\u003ctd\u003e228-260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1982\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 4782330-6225576\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e888\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1971–1972\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 3106717-3472477\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e888\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1973–1977\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 3472478 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e1\/1A\/1B\/1C \u0026amp; EZ\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1963–1966\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 1534570-2065186\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e120\/140\/160\/165\u003c\/td\u003e\n\u003ctd\u003e120-165\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1967–1972\u003c\/td\u003e\n\u003ctd\u003e18654A1\u003c\/td\u003e\n\u003ctd\u003eSerial Range: 2062141-3443920\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eConnects transom plate to bell housing\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eSecured with worm gear clamps (included)\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eApproximately 5.25\" long (133mm), 2.5\" inner diameter (63.5mm) at each end\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eCompression fit with clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 year (typical for aftermarket)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eRibbed construction for flexibility\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows (Replaces 18654A1\/8M0124227)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Worm Gear Clamps (Replaces 54-815504348)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Grounding Clips (Replaces 54-86049\/8M0126505)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the boat's battery for safety.\u003c\/li\u003e\n \u003cli\u003eTrim the sterndrive to the full \"up\" or \"trailer\" position.\u003c\/li\u003e\n \u003cli\u003eRemove the sterndrive assembly following the manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eCarefully loosen the clamps on the old exhaust bellows and remove it from the transom and bell housing.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces to ensure a clean, debris-free seal.\u003c\/li\u003e\n \u003cli\u003eInstall the new bellows, making sure it is properly seated on both ends.\u003c\/li\u003e\n \u003cli\u003eSecure the new worm gear clamps and attach the grounding clips.\u003c\/li\u003e\n \u003cli\u003eReinstall the sterndrive assembly according to service specifications.\u003c\/li\u003e\n \u003cli\u003eOnce reassembled, lower the drive, reconnect the battery, and check thoroughly for any water leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs my exhaust bellows are failing?\u003c\/summary\u003e\u003cp\u003eCommon signs of failure include visible cracks, splits, or rotting of the rubber. The most critical symptom is finding water in your boat's bilge, which could indicate a leak in the bellows or another component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I confirm this part fits my engine?\u003c\/summary\u003e\u003cp\u003eThis bellows kit is designed for a broad range of MerCruiser sterndrives, including the Alpha One (Generations 1 \u0026amp; 2), Bravo (I, II, \u0026amp; III), and other models as listed. The best way to confirm fitment is to match your engine model and serial number range against the compatibility chart provided on this page.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace the exhaust bellows?\u003c\/summary\u003e\u003cp\u003eFor preventative maintenance, it is recommended to inspect all bellows annually for signs of wear or damage. A full replacement is advised every 3–5 years, depending on usage (saltwater vs. freshwater) and storage conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the clamps and grounding clips included?\u003c\/summary\u003e\u003cp\u003eYes, this is a complete kit that includes one exhaust bellows, two heavy-duty worm gear clamps, and two grounding clips required for a standard installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM or aftermarket part?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890609467,"sku":"17B3002","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B3002_635f2eb3-421d-40e2-9b92-efe763a1b874.jpg?v=1762937501"},{"product_id":"exhaust-bellows-kit-fits-volvo-penta-aq-dp-sterndrive-engines-replaces-876631-876294","title":"Exhaust Bellows Kit – Fits Volvo Penta AQ\/DP Sterndrive Engines (Replaces 876631, 876294)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis marine \u003cstrong\u003eExhaust Bellows Kit – Fits Volvo Penta AQ\/DP Sterndrive Engines\u003c\/strong\u003e is an essential replacement component designed for sterndrive models in the Volvo Penta AQ and DP series. The kit provides the necessary parts to maintain the integrity of your engine's exhaust system, prevent water from entering the engine, and ensure reliable performance.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Volvo Penta part numbers 876631 and 876294, as well as Sierra equivalents 18-2758 and 18-2744.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered for direct, clamp-on installation.\u003c\/li\u003e\n \u003cli\u003eConstructed from heavy-duty, marine-grade rubber for durability.\u003c\/li\u003e\n \u003cli\u003eIncludes essential components like bellows and stainless steel clamps for a complete service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e876631\u003c\/td\u003e\n \u003ctd\u003eExhaust Bellows\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e876294\u003c\/td\u003e\n \u003ctd\u003eDrive Bellows Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2758\u003c\/td\u003e\n \u003ctd\u003eExhaust Bellows\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2744\u003c\/td\u003e\n \u003ctd\u003eDrive Bellows Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta: This kit is designed for a wide range of sterndrive models. Please verify your specific model is listed.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e270, 270T\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e275, 275A\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e280, 280DP, 280PT, 280T\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e285A\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e290, 290A, 290DP, 290DPA\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eFor sterndrive models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-A, DP-A1, DP-A2\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-B, DP-B1\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-C, DP-C1\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-D, DP-D1\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-E\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDP-G\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eDPH, DPX\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-A, SP-A1, SP-A2\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-C, SP-C1\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSP-E\u003c\/td\u003e\n\u003ctd\u003e876631, 876294\u003c\/td\u003e\n\u003ctd\u003eSterndrive units\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eClamp-on\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber (heavy-duty marine grade)\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows: 4\" ID (small end), 5\" ID (large end) [approximate]\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eClamp-on with \u003cspan style=\"color:#d0021b;\"\u003estainless steel clamps\u003c\/span\u003e\n\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes exhaust bellows with flaps\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cp\u003ePackage contents may vary slightly between aftermarket manufacturers. A complete kit typically includes:\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows with Flaps (Replaces 876631\/876633)\u003c\/li\u003e\n \u003cli\u003e1 x Drive Bellows Kit with \u003cspan style=\"color:#d0021b;\"\u003eStainless Steel Clamps\u003c\/span\u003e (Replaces 876294)\u003c\/li\u003e\n \u003cli\u003e1 x Water Hose Kit with Stainless Steel Clamp (Replaces 875822) [Note: Included in some, but not all, kits]\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eProfessional installation is recommended. The following are general, model-agnostic steps:\u003c\/p\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the boat's battery and ensure the engine is off and cool. Place the sterndrive in the fully tilted \"up\" position for access.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows by loosening and removing the retaining clamps. You may need to cut the old bellows for easier removal.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the transom housing and the sterndrive. Remove any old sealant, rubber residue, or corrosion.\u003c\/li\u003e\n \u003cli\u003eFit the new bellows into position. Ensure they are seated correctly and not twisted or pinched.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellows with the provided stainless steel clamps. Tighten the clamps firmly to create a watertight seal, but do not overtighten.\u003c\/li\u003e\n \u003cli\u003eDouble-check that all components are secure. Lower the sterndrive and test the installation in the water, carefully checking for any leaks around the bellows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows kit will fit my engine?\u003c\/summary\u003e\n \u003cp\u003eThe best way to ensure fitment is to check your model against the compatibility table provided on this page. Also, cross-reference the OEM part numbers (876631, 876294) with your engine's service manual or existing parts.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs my exhaust bellows need replacement?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks, splits, or perishing of the rubber. You may also notice excessive exhaust noise, or more critically, water entering the bilge, which indicates a leak.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I inspect or replace my sterndrive bellows?\u003c\/summary\u003e\n \u003cp\u003eBellows should be inspected at least annually as part of your regular maintenance schedule. Replacement intervals vary based on usage (freshwater vs. saltwater) and storage conditions, but a general guideline is every 3-5 years, or immediately if any damage is found.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the purpose of the internal flaps in the exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eThe internal flaps act as one-way valves. They allow exhaust gases to exit while preventing water from flowing back up into the engine, especially when the boat is coming off plane or in reverse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I reuse my old clamps?\u003c\/summary\u003e\n \u003cp\u003eIt is strongly recommended to use the new stainless steel clamps included with the kit. Old clamps may have corrosion, fatigue, or stripped threads that prevent a proper seal, leading to catastrophic leaks.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this a kit for both the U-joint\/drive bellows and the exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eYes, this comprehensive kit includes both the drive bellows (replaces 876294) and the exhaust bellows (replaces 876631) for a complete service.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890642235,"sku":"18B2001","price":56.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/18B2001_e76c4f0e-ccdf-4c61-ba97-012508e7d165.jpg?v=1762937503"},{"product_id":"u-joint-bellows-installation-tool-fits-mercruiser-alpha-bravo-drives-replaces-91-818162","title":"U-Joint Bellows Installation Tool – Fits MerCruiser Alpha \u0026 Bravo Drives (Replaces 91-818162)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eU-Joint Bellows Installation Tool\u003c\/strong\u003e is used to install the aluminum expander ring into the U-joint bellows on MerCruiser sterndrives. It is specifically designed for Alpha One Generation II drives (1991 and newer), all Bravo models (I, II, III, X, XR, XZ from 1988 and newer), Blackhawk, and Vazer sterndrives.\u003c\/p\u003e\n\u003cp\u003eThis tool directly replaces Mercury\/MerCruiser part number 91-818162, Sierra 18-9870, and Mallory 9-79821.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls aluminum expander rings securely into U-joint bellows.\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a standard engine alignment tool or a similar driving rod.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable materials for repeated use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-9870\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-79821 \/ 79821\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis tool is designed for the following MerCruiser sterndrive models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Generation II\u003c\/td\u003e\n \u003ctd\u003e1991 and newer\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo I\u003c\/td\u003e\n \u003ctd\u003e1988 and newer\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo II\u003c\/td\u003e\n \u003ctd\u003e1988 and newer\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo III\u003c\/td\u003e\n \u003ctd\u003e1988 and newer\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo X\u003c\/td\u003e\n \u003ctd\u003eAll years\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo XR\u003c\/td\u003e\n \u003ctd\u003eAll years\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo XZ\u003c\/td\u003e\n \u003ctd\u003eAll years\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003eAll years\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eVazer\u003c\/td\u003e\n \u003ctd\u003eAll years\u003c\/td\u003e\n \u003ctd\u003e91-818162\u003c\/td\u003e\n \u003ctd\u003eFor U-joint bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Installation Tool\u003c\/dd\u003e\n \u003cdt\u003eFunction\u003c\/dt\u003e\n\u003cdd\u003eInstalls aluminum expander rings into U-joint bellows\u003c\/dd\u003e\n \u003cdt\u003eCompatible Drives\u003c\/dt\u003e\n\u003cdd\u003eAlpha One Gen II, Bravo I\/II\/III, Blackhawk\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer (e.g., Aluminum, PVC Plastic)\u003c\/dd\u003e\n \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e15 × 10 × 3 cm\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.50 lbs (0.23 kg)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x U-Joint Bellows Installation Tool (Replaces 91-818162)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eApply a small amount of bellows adhesive to the bellows housing on the transom assembly.\u003c\/li\u003e\n\u003cli\u003ePlace the aluminum bellows sealing ring into position on the edge of the bellows.\u003c\/li\u003e\n\u003cli\u003ePosition the installation tool over the bellows to hold it in place.\u003c\/li\u003e\n\u003cli\u003eUse a driving rod (an engine alignment tool works well) through the center hole of the tool to hammer the aluminum ring into its final position.\u003c\/li\u003e\n\u003cli\u003eOnce the ring is fully seated, remove the installation tool.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat drives is this installation tool compatible with?\u003c\/summary\u003e\u003cp\u003eThis tool is designed for the installation of U-joint bellows on MerCruiser Alpha One Generation II (1991 and newer), Bravo series (Bravo I, II, III, X, XR, XZ from 1988 and newer), Blackhawk, and Vazer sterndrives.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need any other tools for this job?\u003c\/summary\u003e\u003cp\u003eYes. This installation tool is used in conjunction with an engine alignment tool or a similar long driving rod. The rod passes through the center of this tool to apply force and seat the aluminum expander ring.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between the OEM Mercury tool and this one?\u003c\/summary\u003e\u003cp\u003eOur aftermarket tool is built to meet or exceed original specifications for a precise fit and reliable function. The primary material may differ; OEM tools are typically aluminum, while some aftermarket versions may be made of high-strength PVC plastic, offering a durable and cost-effective alternative.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if I need to replace my U-joint bellows?\u003c\/summary\u003e\u003cp\u003eInspect your bellows regularly for cracks, splits, or signs of water intrusion in the gimbal bearing area. Any damage requires immediate replacement. This tool is necessary for correctly installing the new bellows retainer ring during that job.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890707771,"sku":"21B1001","price":20.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21B1001_d8ea35f4-ed58-4a8a-82d5-0a52960344fe.jpg?v=1762937506"},{"product_id":"rubber-bellow-fits-volvo-penta-saildrive-110s-150s-replaces-21389074-22247894","title":"Rubber Bellow – Fits Volvo Penta Saildrive 110S-150S (Replaces 21389074, 22247894)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis aftermarket \u003cstrong\u003eRubber Bellow for Volvo Penta Saildrive\u003c\/strong\u003e provides a crucial waterproof seal between the saildrive unit and the hull. It is engineered for direct compatibility with a range of saildrive models, including the 110S, 120S, 130S, and 150S series, ensuring reliable performance in marine environments.\u003c\/p\u003e\n \u003cp\u003eThis component is a direct replacement for Volvo Penta OEM part numbers 21389074 and 22247894.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eMounts externally on the saildrive unit.\u003c\/li\u003e\n \u003cli\u003eSecured via a compression fit using the included clamps.\u003c\/li\u003e\n \u003cli\u003eMade from durable, black rubber to withstand marine conditions.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e21389074\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eThis bellow is designed for the following Volvo Penta saildrive models.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e110S\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e120S\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e120SA\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e120SB\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e120SC\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e120SD\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e120SE\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130S\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130S-A\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130S-B\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130S-C\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130S-D\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130SR\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130SR-A\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130SR-B\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130SR-C\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e130SR-D\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150S\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150S-A\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150S-B\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150S-C\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150S-D\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150SR-A\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150SR-B\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150SR-C\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e150SR-D\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eMS25S\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eMS25S-A\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eMS25S-R\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eMS25S-RA\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eS120C\u003c\/td\u003e\n \u003ctd\u003e21389074\/22247894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eRubber Bellow \/ Diaphragm Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eExternal mount on saildrive unit\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eFitted with included clamps\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eCompression fit with clamps\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eWaterproof seal between saildrive and hull\u003c\/dd\u003e\n \u003c\/dl\u003e\n\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Rubber Bellow\/Diaphragm Kit \u003cspan style=\"color:#d0021b;\"\u003e(Replaces 21389074\/22247894)\u003c\/span\u003e\n\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eHaul the vessel out of the water to access the saildrive unit.\u003c\/li\u003e\n \u003cli\u003eDisconnect the saildrive from the engine and supporting structures.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old clamps and cut or pry the old rubber bellow off the saildrive and hull interface.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean both mounting surfaces, ensuring they are free of old adhesive, rubber, and corrosion.\u003c\/li\u003e\n \u003cli\u003ePosition the new bellow, ensuring it is correctly oriented and seated on both the saildrive and hull flanges.\u003c\/li\u003e\n \u003cli\u003eApply a suitable marine-grade sealant if recommended by the manufacturer for your specific model.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellow with the provided clamps, tightening them to the manufacturer's specified torque.\u003c\/li\u003e\n \u003cli\u003eReconnect the saildrive to the engine and re-install all hardware.\u003c\/li\u003e\n \u003cli\u003eOnce the vessel is back in the water, carefully check for any signs of leaks around the new seal.\u003c\/li\u003e\n \u003c\/ol\u003e\n\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellow fits my specific boat?\u003c\/summary\u003e\n \u003cp\u003eThis bellow is designed for Volvo Penta saildrive models 110S, 120S, 130S, and 150S, plus their variants as listed in the compatibility table. The most reliable way to confirm fitment is by matching the OEM part number (21389074 or 22247894) with your existing part or service manual.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing saildrive bellow?\u003c\/summary\u003e\n \u003cp\u003eVisible cracks, perishing, or deformation of the rubber are clear indicators. Water ingress into the bilge, especially when the engine is running or in rough seas, is a critical sign that the seal may be compromised and requires immediate inspection.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n \u003cp\u003eVolvo Penta recommends replacing the saildrive diaphragm every 7 years as a critical preventative maintenance item, regardless of visible condition. Failure to do so can lead to catastrophic water ingress.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs any special adhesive required for installation?\u003c\/summary\u003e\n \u003cp\u003eWhile this is a compression-fit part secured by clamps, some installers apply a thin layer of marine-grade adhesive sealant as an extra precaution. Consult your Volvo Penta service manual for the official recommendation for your specific model.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I install this part myself?\u003c\/summary\u003e\n \u003cp\u003eThis is a critical component for your vessel's integrity. While experienced mechanics can perform the replacement, it requires hauling the boat and potentially separating the engine from the drive. For safety and peace of mind, professional installation is strongly recommended.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n \n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n \n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890740539,"sku":"23B1029","price":48.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23B1029_aabc63e1-32e0-4411-be8b-3b01df109b9f.jpg?v=1762937508"},{"product_id":"u-joint-bellows-kit-fits-volvo-penta-sx-dp-series-omc-cobra-replaces-23075752-22197130","title":"U-Joint Bellows Kit – Fits Volvo Penta SX\/DP Series \u0026 OMC Cobra (Replaces 23075752, 22197130)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eU-Joint Bellows Kit\u003c\/strong\u003e serves as a direct replacement for Volvo Penta sterndrive models (SX and DP series, 1994–Present) and OMC Cobra clutch dog models (1986–1993). It protects the universal joint assembly from water intrusion, which is critical for preventing corrosion and premature mechanical failure.\u003c\/p\u003e\n\u003cp\u003eIt provides a direct interchange for Volvo Penta part numbers 23075752, 22197130, 3841481, and 3854127, as well as several other aftermarket equivalents.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls on the transom shield assembly to protect the U-joint.\u003c\/li\u003e\n\u003cli\u003eMade from a high-grade marine rubber compound for durability.\u003c\/li\u003e\n\u003cli\u003eAccordion-style design allows for sterndrive movement while maintaining a water-tight seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e23075752, 22197130, 3841481, 3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e983973, 987467\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2765\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89200\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72707\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500514K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model and year in the tables below.\u003c\/p\u003e\n\u003cp\u003eFits a wide range of Volvo Penta SX, DP, and legacy sterndrive models manufactured from 1994 to the present.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-S, SX-C1, SX-C2, SX-R, SX-R1, SX-R2, SX-A\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eSuperseded 22197130, 3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-M, SX-M1\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eSuperseded 22197130, 3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S, DP-SM, DPS-A, DPS-B\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003eSuperseded 22197130, 3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eMD 3.0 GL, 3.0 GS\u003c\/td\u003e\n \u003ctd\u003e3.0L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eHU 3.0 GS\u003c\/td\u003e\n \u003ctd\u003e3.0L\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003ePJX-C, PJX-S, PJX-C1\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-C1, DP-D1, DPX-S, DPX-S1\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-E, DP-S1, DP-S2\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eXact STEERING, HS1A\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–Present\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eAlso compatible with OMC Cobra models that use a clutch-dog mechanism, generally from 1986 to 1993.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"OMC Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra (All Clutch Dog models)\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e983973\/987467\u003c\/td\u003e\n \u003ctd\u003eOMC part superseded by Volvo Penta after acquisition\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eU-Joint Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eTransom Shield Assembly\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eUniversal Joint Assembly\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eHigh-grade marine rubber compound\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eLength: 137 mm (5.39 in), Outer Diameter: 107-110 mm (4.21-4.33 in), Inner Diameter: 92-98 mm (3.62-3.86 in)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.35 kg (0.77 lb)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eAccordion-style bellows with clamp\u003c\/dd\u003e\n \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003e-10°C to +80°C (14°F to 176°F)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eAccordion-style design accommodates sterndrive movement while maintaining a water-tight seal\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (Replaces 23075752)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Stainless Steel Hose Clamp (316 grade)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e1 x Installation Instructions (where provided by manufacturer)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the boat's battery for safety.\u003c\/li\u003e\n \u003cli\u003eTilt the sterndrive to the full \"up\" or \"trailer\" position to access the bellows.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old clamps and cut or pry away the old, deteriorated bellows.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surfaces on the transom shield and sterndrive.\u003c\/li\u003e\n \u003cli\u003eFit the new bellows into position, ensuring it is properly seated on both ends.\u003c\/li\u003e\n \u003cli\u003eSecure the new bellows with the provided stainless steel clamp, tightening it firmly for a water-tight seal.\u003c\/li\u003e\n \u003cli\u003eLower the sterndrive and inspect the seal to ensure it is secure and not pinched.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery once installation is complete and verified.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows will fit my sterndrive?\u003c\/summary\u003e\n \u003cp\u003eThis kit is designed for Volvo Penta SX and DP series drives from 1994 to present, and OMC Cobra clutch dog models from 1986–1993. The best way to confirm is to check your model against the compatibility table and cross-reference your existing part number with our Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my current U-joint bellows is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of a failing bellows include visible cracks, splits, or perishing of the rubber. You may also find water inside the boat near the transom assembly after use, which indicates a leak. Any water intrusion risks catastrophic damage to the U-joint and gimbal bearing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the U-joint bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance item, most manufacturers recommend inspecting bellows annually and replacing them every 3-5 years, depending on usage (saltwater vs. freshwater) and environmental exposure. It is often replaced along with the gimbal bearing and shift cable bellows.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this a complete kit for the job?\u003c\/summary\u003e\n \u003cp\u003eThis kit includes the U-joint bellows and the necessary stainless steel clamp for one side of the installation. Depending on your model, you may need a second clamp or special tools, which are not included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717890838843,"sku":"24BL043","price":48.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24BL043_3d7802f5-bea5-4111-94d6-2dc620f5db6c.jpg?v=1762937511"},{"product_id":"transom-seal-service-bellows-kit-fits-mercruiser-r-mr-alpha-one-gen-1-alpha-one-ss-replaces-mercruiser-30-803097t1-sierra-18-8213","title":"Transom Seal Service Bellows Kit – Fits MerCruiser R, MR Alpha One Gen 1, Alpha One SS (Replaces MerCruiser 30-803097T1, Sierra 18-8213)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eTransom Seal Service Bellows Kit – Fits MerCruiser Alpha One Gen 1, R, MR\u003c\/strong\u003e is a comprehensive aftermarket solution for MerCruiser R, MR, and Alpha One Gen 1 sterndrives (1983–1991) with serial numbers 6225577 and up. It also fits Alpha One SS models from 1986–1989 with serial numbers 0A545004 and up.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for MerCruiser part 30-803097T1, Sierra 18-8213 \/ 18-2601-1, and Mallory 9-72902, providing all necessary components for a complete transom service.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered as a direct replacement for a precise fit.\u003c\/li\u003e\n\u003cli\u003eIncludes all required gaskets, o-rings, and hose clamps for installation.\u003c\/li\u003e\n\u003cli\u003eBellows are constructed from durable neoprene rubber to withstand the marine environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e803097T1 \/ 30-803097T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8213 \/ 18-2601-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72902\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser owners, it is critical to verify your model and serial number range to ensure correct fitment. This kit is specific to the models listed.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR, MR Alpha One\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1983–1991\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eSerial range: 6225577 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One SS\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1989\u003c\/td\u003e\n \u003ctd\u003e30-803097T1\u003c\/td\u003e\n \u003ctd\u003eSerial range: 0A545004 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal Service Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eHose clamps (included)\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber bellows\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e2.23 kg (4.91 lb)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eComplete kit with all necessary components\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows (60932A4)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows (18654A1)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Bellows (74639)\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Bearing (30-60792A4)\u003c\/li\u003e\n \u003cli\u003e1 x Water Hose 3\/4\" (32-41725-33)\u003c\/li\u003e\n \u003cli\u003e1 x Water Hose 5\/8\" (32-32461)\u003c\/li\u003e\n \u003cli\u003e1 x Gasket Kit (27-94996T2)\u003c\/li\u003e\n \u003cli\u003e4 x O-Rings (various sizes)\u003c\/li\u003e\n \u003cli\u003e1 x Bell Housing Gasket\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring (25-33504)\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring (25-35027)\u003c\/li\u003e\n \u003cli\u003e2 x O-Rings (25-25439)\u003c\/li\u003e\n \u003cli\u003eMounting hardware and hose clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the sterndrive unit from the transom assembly.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old U-joint, exhaust, and shift cable bellows. Inspect and remove the old gimbal bearing.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean all mating surfaces on the bell housing and transom assembly, removing any old gasket material or sealant.\u003c\/li\u003e\n \u003cli\u003ePress the new gimbal bearing into the housing, ensuring it is properly aligned and seated.\u003c\/li\u003e\n \u003cli\u003eInstall the new shift cable, exhaust, and U-joint bellows, using a bellows expander tool for the U-joint bellows.\u003c\/li\u003e\n \u003cli\u003eSecure all bellows with the provided hose clamps, ensuring they are tight and properly positioned.\u003c\/li\u003e\n \u003cli\u003eReplace the water intake hoses and install the new bell housing gasket and o-rings.\u003c\/li\u003e\n \u003cli\u003eReinstall the sterndrive, using an alignment tool to ensure proper engine-to-drive alignment.\u003c\/li\u003e\n \u003cli\u003eOnce assembled, lower the drive into the water and check thoroughly for any leaks before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my sterndrive?\u003c\/summary\u003e\u003cp\u003eCheck your model (R, MR, Alpha One Gen 1, or Alpha One SS) and year. Crucially, verify your serial number is within the range: 6225577 and up for Alpha One Gen 1 (1983–1991) or 0A545004 and up for Alpha One SS (1986–1989).\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs my transom seal kit is failing?\u003c\/summary\u003e\u003cp\u003eCommon signs include water entering the boat's bilge area, a grinding or clicking noise from the gimbal bearing when turning the wheel, or visible cracks, splits, or perishing on the rubber bellows.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the transom bellows be replaced?\u003c\/summary\u003e\u003cp\u003eAs a preventative maintenance item, it is best practice to inspect bellows annually and replace them every 3–5 years, depending on usage and water conditions (saltwater vs. freshwater). Replace them immediately if you see any signs of wear or damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the included gimbal bearing pre-greased?\u003c\/summary\u003e\u003cp\u003eNo, the gimbal bearing supplied in this kit is not pre-greased. It is critical to grease the bearing properly upon installation using a quality marine grease to prevent premature failure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre special tools required for this installation?\u003c\/summary\u003e\u003cp\u003eYes, replacing a transom seal kit typically requires specialized marine tools, including a gimbal bearing puller\/installer, a bellows expansion tool, and an engine alignment tool to ensure the drive is reinstalled correctly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between this kit and an OEM one?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket kit designed to meet or exceed original manufacturer specifications using comparable, high-quality materials. It provides a reliable, cost-effective alternative to genuine OEM parts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is your policy on shipping speed \u0026amp; cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout where applicable.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat warranty and return options do you offer?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717893296443,"sku":"QM-803097T1","price":81.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/QM-803097T1.png?v=1762937599"},{"product_id":"exhaust-tube-bellows-fits-mercruiser-r-mr-alpha-one-bravo-i-ii-iii-replaces-78458a1-18-2760","title":"Exhaust Tube Bellows – Fits MerCruiser R\/MR\/Alpha One \u0026 Bravo I\/II\/III (Replaces 78458A1, 18-2760)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis marine \u003cstrong\u003eExhaust Tube Bellows\u003c\/strong\u003e is designed for MerCruiser sterndrives, including R\/MR\/Alpha One models from 1983–1990 (serial number 6225577 \u0026amp; up), Bravo I, II, and III models from 1988 and later (serial number OB664190 \u0026amp; up), and Blackhawk models from 1994–1995 (serial number 0F18677 \u0026amp; up).\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 78458A1, Sierra 18-2760, GLM 89150, and Mallory 9-72810.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct-fit, OEM-equivalent installation.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable rubber to withstand the harsh marine environment.\u003c\/li\u003e\n\u003cli\u003eIncludes essential stainless steel clamps for a complete and secure installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2760\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89150\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72810\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser applications, verify that your sterndrive model and serial number range match the compatibility data listed.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR\/MR\/Alpha One\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003eSerial No. 6225577 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo I, II, III\u003c\/td\u003e\n \u003ctd\u003e1988+\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003eSerial No. OB664190 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003e1994–1995\u003c\/td\u003e\n \u003ctd\u003e78458A1\u003c\/td\u003e\n \u003ctd\u003eSerial No. 0F18677 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Tube Bellows\u003c\/dd\u003e\n \u003cdt\u003eFitment\u003c\/dt\u003e\n\u003cdd\u003eOEM Replacement\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect Replacement\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eMerCruiser Stern Drives\u003c\/dd\u003e\n \u003cdt\u003ePackage Contents\u003c\/dt\u003e\n\u003cdd\u003eBellows with stainless steel clamps\u003c\/dd\u003e\n \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n\u003cdd\u003e78458A1, 18-2760, 9-72810, 89150\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Exhaust Tube Bellows (Replaces 78458A1)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Set of Stainless Steel Clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off, cool to the touch, and the battery is disconnected for safety.\u003c\/li\u003e\n \u003cli\u003eTrim the sterndrive to the full \"up\" or \"trailer\" position to access the bellows.\u003c\/li\u003e\n \u003cli\u003eLocate and loosen the clamps on both ends of the old exhaust bellows, then carefully pry it off the bell housing and exhaust tube.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting grooves on both surfaces, removing any old sealant or debris.\u003c\/li\u003e\n \u003cli\u003eFit the new exhaust bellows into position, ensuring it is properly seated in the grooves on both ends.\u003c\/li\u003e\n \u003cli\u003eSecurely fasten the new stainless steel clamps. Tighten them to the manufacturer's recommended torque specification to prevent leaks.\u003c\/li\u003e\n \u003cli\u003eLower the sterndrive, reconnect the battery, and start the engine in the water, checking carefully for any signs of exhaust leaks around the new bellows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this bellows will fit my engine?\u003c\/summary\u003e\n \u003cp\u003eThis bellows fits specific MerCruiser sterndrives: R\/MR\/Alpha One (1983–1990), Bravo I\/II\/III (1988+), and Blackhawk (1994–1995). Always verify your model and, most importantly, the serial number range provided in the compatibility list before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include visible cracks, splits, or perishing rubber. You may also notice an unusually loud exhaust noise or water entering the bilge area, both of which can indicate a leak that requires immediate attention.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the exhaust bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a critical preventative maintenance item, it is recommended to inspect bellows annually for wear and tear. Replacement is typically advised every 3-5 years, depending on hours of use and exposure to saltwater versus freshwater.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this part different from the original Mercury part?\u003c\/summary\u003e\n \u003cp\u003eThis is an aftermarket part designed to meet or exceed OEM specifications for fit, form, and function. It offers a cost-effective alternative to the original 78458A1 part while ensuring reliable performance and durability.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717894574395,"sku":"VK-XZLJ-V46P","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/VK-XZLJ-V46P.png?v=1762937646"},{"product_id":"exhaust-bellows-expander-tool-fits-mercruiser-alpha-one-gen-ii-bravo-series-replaces-91-45497a1-8m0096108","title":"Exhaust Bellows Expander Tool – Fits MerCruiser Alpha One, Gen II, Bravo Series (Replaces 91-45497A1, 8M0096108)","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n table.ss-table th {\n white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc;\n }\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eExhaust Bellows Expander Tool – Fits MerCruiser Alpha One, Gen II, Bravo Series (Replaces 91-45497A1, 8M0096108)\u003c\/strong\u003e is designed for stretching and installing exhaust bellows on a wide range of MerCruiser sterndrive units. It is compatible with Alpha One, Alpha One Generation 2, Bravo One, Bravo Two, Bravo Three, Blackhawk, MC-1, R, and MR drive units from 1983 and newer.\u003c\/p\u003e\n \u003cp\u003eThis tool directly replaces Mercury part numbers 91-45497A1 and 8M0096108, as well as aftermarket equivalents like Sierra 18-9847 and GLM 90360.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eFeatures a scissor-handle with a screw lock mechanism for manual operation.\u003c\/li\u003e\n \u003cli\u003eConstructed from high-quality steel for durability.\u003c\/li\u003e\n \u003cli\u003eNote: The Z-drive must be removed from the bell housing to use this tool correctly.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-9847\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e90360\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eThis tool is designed for use on various MerCruiser sterndrive models as detailed in the matrix.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One\u003c\/td\u003e\n \u003ctd\u003e1983–1990\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eFirst Generation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003e1991 and up\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo One\u003c\/td\u003e\n \u003ctd\u003e1996–2013\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo Two\u003c\/td\u003e\n \u003ctd\u003e1996–2013\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo Three\u003c\/td\u003e\n \u003ctd\u003e1996–2013\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eMC-1\u003c\/td\u003e\n \u003ctd\u003e1998–2009\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003eIntegrated rear drive\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eMR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\/8M0096108\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Installation Tool\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual Operation\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eHigh-quality Steel\u003c\/dd\u003e\n \u003cdt\u003eHandle Material\u003c\/dt\u003e\n\u003cdd\u003eSteel with PVC Grip Cover\u003c\/dd\u003e\n \u003cdt\u003eDesign\u003c\/dt\u003e\n\u003cdd\u003eScissor-handle with Screw Lock Mechanism\u003c\/dd\u003e\n \u003cdt\u003eHandle Style\u003c\/dt\u003e\n\u003cdd\u003ePliers-like with Non-slip Grip\u003c\/dd\u003e\n \u003cdt\u003eMechanism\u003c\/dt\u003e\n\u003cdd\u003eMechanical Expansion\/Compression\u003c\/dd\u003e\n \u003cdt\u003eRequired Installation\u003c\/dt\u003e\n\u003cdd\u003eZ-drive Must Be Removed to Use Tool\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows Expander Tool (91-45497A1\/8M0096108)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eInstall the exhaust bellows on the gimbal housing.\u003c\/li\u003e\n \u003cli\u003eUse the tool to stretch the bellows through the exhaust hole in the bell housing.\u003c\/li\u003e\n \u003cli\u003eTighten the hose clamp securely.\u003c\/li\u003e\n \u003cli\u003eNote: The Z-drive must be removed to use this tool.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhich MerCruiser drives is this tool compatible with?\u003c\/summary\u003e\n \u003cp\u003eThis tool fits MerCruiser Alpha One (including Gen II), Bravo (One, Two, Three), Blackhawk, MC-1, R, and MR sterndrive units manufactured from 1983 onwards.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs it necessary to remove the sterndrive to use this tool?\u003c\/summary\u003e\n \u003cp\u003eYes, the Z-drive must be removed from the bell housing before you can use this tool to install the exhaust bellows.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat OEM part numbers does this tool replace?\u003c\/summary\u003e\n \u003cp\u003eThis aftermarket tool is a direct replacement for Mercury OEM part numbers 91-45497A1 and 8M0096108. It also cross-references to Sierra 18-9847 and GLM 90360.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options may appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part before purchasing. If anything differs, do not purchase, even if your model is listed as compatible.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement part, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is highly recommended for safety and optimal performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions, with typical transit times of 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Our direct-sourcing model ensures fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717896212795,"sku":"39oY78t871o","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/39oY78t871o.png?v=1762937701"},{"product_id":"transom-bellows-kit-fits-mercruiser-bravo-1-2-3-blackhawk-replaces-30-803100t1-8m0095485","title":"Transom Bellows Kit – Fits MerCruiser Bravo 1, 2, 3 \u0026 Blackhawk (Replaces 30-803100T1, 8M0095485)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis comprehensive \u003cstrong\u003eMerCruiser Transom Bellows Kit\u003c\/strong\u003e is designed for the service and repair of MerCruiser Bravo I, II, and III stern drives (1998 and newer, serial number 0B664190 and up) and Blackhawk models (1994–1995, serial number 0D469859 and up). It provides all essential components for restoring the integrity of the transom assembly.\u003c\/p\u003e\n\u003cp\u003eThe kit serves as a direct interchange for MerCruiser OEM parts 30-803100T1 and 8M0095485, as well as aftermarket equivalents like Sierra 18-8219 and GLM 21965.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered for direct OEM replacement and fitment.\u003c\/li\u003e\n \u003cli\u003eConstructed with durable CR Neoprene bellows and SS304 stainless steel hardware.\u003c\/li\u003e\n \u003cli\u003eIncludes marine-grade O-rings and a complete outdrive gasket set.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e30-803100T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003e8M0095485\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8219\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8212-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21965\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis kit is specifically designed for the following MerCruiser stern drive models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo I\u003c\/td\u003e\n \u003ctd\u003e1998–present\u003c\/td\u003e\n \u003ctd\u003e30-803100T1\/8M0095485\u003c\/td\u003e\n \u003ctd\u003eSerial number 0B664190 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo II\u003c\/td\u003e\n \u003ctd\u003e1998–present\u003c\/td\u003e\n \u003ctd\u003e30-803100T1\/8M0095485\u003c\/td\u003e\n \u003ctd\u003eSerial number 0B664190 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo III\u003c\/td\u003e\n \u003ctd\u003e1998–present\u003c\/td\u003e\n \u003ctd\u003e30-803100T1\/8M0095485\u003c\/td\u003e\n \u003ctd\u003eSerial number 0B664190 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003e1994–1995\u003c\/td\u003e\n \u003ctd\u003e30-803100T1\/8M0095485\u003c\/td\u003e\n \u003ctd\u003eSerial number 0D469859 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Bellows Service Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect mount to transom assembly\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eCR Neoprene bellows, SS304 clips and clamps\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eMarine stern drive transom assembly\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eMarine engine grade O-rings\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Gimbal Bearing with Gimbal Housing Seal (41802)\u003c\/li\u003e\n \u003cli\u003e1 x U-Joint Bellow (86840A3\/86840A05)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Bellow (74639)\u003c\/li\u003e\n \u003cli\u003e1 x Bell Housing Exhaust Bellow (18654A1)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Tube (78458A1)\u003c\/li\u003e\n \u003cli\u003e1 x Water Intake Hose\u003c\/li\u003e\n \u003cli\u003e1 x Outdrive Gasket Set\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Housing Oil Seal (16755Q1)\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Housing Seal (41802)\u003c\/li\u003e\n \u003cli\u003e1 x Insert Driver (41674)\u003c\/li\u003e\n \u003cli\u003e1 x Lever (45518A3)\u003c\/li\u003e\n \u003cli\u003e1 x Guide (43433)\u003c\/li\u003e\n \u003cli\u003e1 x Insert (14705)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Wrapping (38473)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and trim the stern drive to the \"trailer\" position.\u003c\/li\u003e\n \u003cli\u003eRemove the stern drive unit from the transom assembly according to the manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows (U-joint, exhaust, shift cable), gimbal bearing, and all associated seals.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean all mating surfaces on the transom and bell housing, inspecting for corrosion or damage.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing and seals using appropriate alignment and driver tools.\u003c\/li\u003e\n \u003cli\u003eInstall the new U-joint, exhaust, and shift cable bellows, ensuring all clamps are correctly positioned and tightened securely.\u003c\/li\u003e\n \u003cli\u003eReconnect cooling water hoses and shift linkage components.\u003c\/li\u003e\n \u003cli\u003eReinstall the stern drive unit, using the new gasket set provided. Torque all fasteners to the specified values.\u003c\/li\u003e\n \u003cli\u003eOnce assembled, check for leaks and verify proper shift and steering operation before returning to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow can I tell if my existing bellows are failing?\u003c\/summary\u003e\n \u003cp\u003eLook for visible cracks, splits, or perishing of the rubber. Water inside the bellows (a milky appearance in the gear lube is a strong indicator) or excessive noise and vibration from the gimbal bearing area also signal a need for replacement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this kit compatible with an older Bravo drive before 1998?\u003c\/summary\u003e\n \u003cp\u003eNo, this kit is specifically for models from 1998 and newer (serial number 0B664190 and up). Older drives require a different bellows and bearing kit. Always verify your serial number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval for transom bellows?\u003c\/summary\u003e\n \u003cp\u003eFor preventative maintenance, it's wise to inspect bellows annually and replace them every 3-5 years, depending on usage (saltwater vs. freshwater) and storage conditions. A damaged bellow can lead to catastrophic failure of the gimbal bearing and U-joints.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this kit include the alignment tool?\u003c\/summary\u003e\n \u003cp\u003eNo, an engine alignment tool is required for proper gimbal bearing installation but is not included in this service kit. It must be sourced separately.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717897425211,"sku":"2022-A05-001","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/2022-A05-001.png?v=1762937745"},{"product_id":"transom-bellows-seal-kit-fits-mercruiser-alpha-one-gen-ii-replaces-30-803099t1-803099t1","title":"Transom Bellows Seal Kit – Fits MerCruiser Alpha One Gen II (Replaces 30-803099T1, 803099T1)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eTransom Bellows Seal Kit\u003c\/strong\u003e is designed for MerCruiser Alpha One Gen II stern drives manufactured from 1991 to the present (serial numbers 0D469859 and up). It provides the essential components needed to replace worn or damaged bellows, protecting your gimbal bearing and U-joints from water intrusion.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Quicksilver part numbers 30-803099T1 and 803099T1, Sierra 18-8206-1 and 18-8218, and Mallory 9-72900 and 9-72906.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation requires the removal of the outdrive assembly for access.\u003c\/li\u003e\n\u003cli\u003eComponents are made from marine-grade rubber with stainless steel hose clamps for corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eNote that bellows adhesive is required for installation but is not included with this kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eQuicksilver\u003c\/td\u003e\n \u003ctd\u003e30-803099T1 \/ 803099T1\u003c\/td\u003e\n \u003ctd\u003eOEM Reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8206-1\u003c\/td\u003e\n \u003ctd\u003eIncludes greasable gimbal bearing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8218\u003c\/td\u003e\n \u003ctd\u003eIncludes sealed gimbal bearing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72900 \/ 9-72906\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser applications, it is critical to ensure your drive's serial number is 0D469859 or newer, in addition to matching the model and year range.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991–Present\u003c\/td\u003e\n \u003ctd\u003e30-803099T1\/803099T1\u003c\/td\u003e\n \u003ctd\u003eSerial numbers 0D469859 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal Kit \/ Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement, requires removal of outdrive\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber bellows with stainless steel hose clamps\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eVaries by component\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e2.2 kg (4.9 lbs)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eLimited lifetime (Sierra), Manufacturer warranty (Quicksilver)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eCalifornia Prop 65 Warning applies\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x U-Joint Bellows\u003c\/li\u003e\n\u003cli\u003e1 x Exhaust Bellows\u003c\/li\u003e\n\u003cli\u003e1 x Shift Cable Bellows\u003c\/li\u003e\n\u003cli\u003e1 x Gimbal Bearing (Note: Greasable in Sierra 18-8206-1, Sealed in Sierra 18-8218)\u003c\/li\u003e\n\u003cli\u003e1 x Water Hose (3\/4\" ID)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003eMultiple\u003c\/span\u003e x Stainless Steel Hose Clamps\u003c\/li\u003e\n\u003cli\u003e1 x Mounting Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003eMultiple\u003c\/span\u003e x Mounting O-Rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the vessel's battery and safely remove the outdrive assembly according to your manufacturer's service manual.\u003c\/li\u003e\n\u003cli\u003eCarefully cut and remove the old U-joint, exhaust, and shift cable bellows. Remove the old gimbal bearing.\u003c\/li\u003e\n\u003cli\u003eThoroughly clean all mating surfaces on the transom and bell housing, removing any old adhesive or sealant residue.\u003c\/li\u003e\n\u003cli\u003ePress the new gimbal bearing into the gimbal housing, ensuring correct alignment for grease passage if applicable.\u003c\/li\u003e\n\u003cli\u003eApply a suitable bellows adhesive (not included) to the mounting rings and install the new U-joint, exhaust, and shift bellows. Secure all connections with the provided clamps.\u003c\/li\u003e\n\u003cli\u003eInstall the new water hose, mounting gasket, and O-rings.\u003c\/li\u003e\n\u003cli\u003eCarefully reinstall the outdrive assembly, checking for proper alignment and ensuring the U-joint shaft engages correctly.\u003c\/li\u003e\n\u003cli\u003eBefore operating the vessel, perform a leak check by lowering the drive into the water and inspecting the bilge for any water intrusion.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Bellows adhesive and gimbal bearing sealant are required for proper installation but are not included in this kit. Professional installation is highly recommended.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWill this kit fit my MerCruiser Alpha One Gen II?\u003c\/summary\u003e\n \u003cp\u003eThis kit is specifically designed for MerCruiser Alpha One Gen II stern drives manufactured from 1991 onwards. It is critical that you also verify your drive's serial number is 0D469859 or higher, as fitment depends on this range.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this a complete kit? What else will I need?\u003c\/summary\u003e\n \u003cp\u003eThis kit contains all the necessary bellows, a gimbal bearing, gaskets, O-rings, and clamps. However, please note that bellows adhesive is required for a secure installation and is not included. Additionally, based on customer reports, the gimbal bearing seal is not included and is a recommended separate purchase.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between the Sierra part numbers (18-8206-1 vs. 18-8218)?\u003c\/summary\u003e\n \u003cp\u003eThe primary difference is the type of gimbal bearing included. Sierra kit 18-8206-1 contains a greasable gimbal bearing, which allows for periodic maintenance. Kit 18-8218 includes a sealed, non-greasable bearing. Your choice depends on your preference for a serviceable or maintenance-free component.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if my transom bellows are failing?\u003c\/summary\u003e\n \u003cp\u003eThe most common signs of failure are visible cracks, splits, or dry rot on the rubber bellows during a visual inspection. A critical symptom is water leaking into your boat's bilge from the transom area, which indicates a breach and requires immediate attention to prevent severe damage to the U-joints and gimbal bearing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an original OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the shipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717898277179,"sku":"1D-QV5W-SU0L","price":209.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/1D-QV5W-SU0L.png?v=1762937776"},{"product_id":"transom-seal-bellows-kit-fits-mercruiser-alpha-one-gen-2-replaces-30-803099t1","title":"Transom Seal Bellows Kit – Fits MerCruiser Alpha One Gen 2 (Replaces 30-803099T1)","description":"\u003cstyle\u003e\n\/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\/* Base table styles *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n\/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\ntable.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n\/* Small screen optimization *\/\n@media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n}\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis complete \u003cstrong\u003eTransom Seal Bellows Kit – Fits MerCruiser Alpha One Gen 2 Stern Drives (Replaces 803099T1)\u003c\/strong\u003e is designed for MerCruiser Alpha One Generation 2 stern drives manufactured from 1991 and up (serial numbers 0D469859 and higher). It provides all the necessary components to seal the transom opening, protecting critical drive components from water intrusion.\u003c\/p\u003e\n \u003cp\u003eThis kit serves as a direct replacement for Mercury\/MerCruiser 30-803099T1, Sierra 18-8206-1 \/ 18-8218, Mallory 9-72900 \/ 9-72904 \/ 9-72906, and Red Rhino MR-907.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eInstallation: Mounts externally on the transom and gimbal housing.\u003c\/li\u003e\n \u003cli\u003eHousing Material: Made from durable neoprene rubber.\u003c\/li\u003e\n \u003cli\u003eKey Components: Includes drive, exhaust, and shift bellows, plus a gimbal bearing and gaskets.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e30-803099T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e803099T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8206-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8218\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72900\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72904\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-72906\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRed Rhino\u003c\/td\u003e\n \u003ctd\u003eMR-907\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991 and up\u003c\/td\u003e\n \u003ctd\u003e803099T1\/30-803099T1\u003c\/td\u003e\n \u003ctd\u003eSerial numbers 0D469859 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal\/Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eExternal\/Transom Mounted\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect Mount to Transom\/Gimbal Housing\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene (Rubber)\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e12.32 × 7.44 × 6.18 inches (312.9 × 189 × 157 mm)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e4.4 pounds (2 kg)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eMechanical Clamp\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eStandard Manufacturer Warranty\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eSeals the transom opening between the boat and stern drive\u003c\/dd\u003e\n \u003c\/dl\u003e\n\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 × Drive Shaft Bellows (816431A1)\u003c\/li\u003e\n \u003cli\u003e1 × Exhaust Bellows Assembly (18654A1\/8M0124227)\u003c\/li\u003e\n \u003cli\u003e1 × Shift Cable Bellows Assembly (74639A2)\u003c\/li\u003e\n \u003cli\u003e1 × \u003cspan style=\"color:#d0021b;\"\u003eGimbal Bearing\u003c\/span\u003e (879194A02\/30-879194A01\/30-862540A3)\u003c\/li\u003e\n \u003cli\u003e1 × Water Hose 3\/4\" (32-41725\/32-8M0062309\/8M0215001)\u003c\/li\u003e\n \u003cli\u003e2 × Bell Housing Gasket Kit (27-94996T2\/27-94996Q2\/8M0091545)\u003c\/li\u003e\n \u003cli\u003e1 × Gimbal Housing Oil Seal (26-88416)\u003c\/li\u003e\n \u003cli\u003e1 × Gimbal Housing Seal (41802)\u003c\/li\u003e\n \u003cli\u003e1 × Bell Housing Shaft Lever (45518A3)\u003c\/li\u003e\n \u003cli\u003e1 × Shift Cable Guide (43433)\u003c\/li\u003e\n \u003cli\u003e1 × Shift Cable Insert (14705)\u003c\/li\u003e\n \u003cli\u003e1 × Shift Cable Wrapping (38473)\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eSafety first: Disconnect the boat's battery and ensure the stern drive is in the fully trimmed down position.\u003c\/li\u003e\n \u003cli\u003eRemove the stern drive assembly from the gimbal housing according to the manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old bellows, gimbal bearing, and all associated seals and gaskets.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean all mating surfaces on the transom and gimbal housing, removing any old sealant or debris.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing using an appropriate driver tool. Ensure it is seated correctly.\u003c\/li\u003e\n \u003cli\u003eInstall the new drive shaft, exhaust, and shift cable bellows. Secure all clamps tightly.\u003c\/li\u003e\n \u003cli\u003eInstall the new water hose and all included gaskets and seals.\u003c\/li\u003e\n \u003cli\u003eReinstall the stern drive assembly, torquing all fasteners to the specified values.\u003c\/li\u003e\n \u003cli\u003eAfter reinstallation, check for proper shift and steering operation.\u003c\/li\u003e\n \u003cli\u003eOnce the boat is in the water, check for any water leaks around the transom assembly.\u003c\/li\u003e\n \u003c\/ol\u003e\n\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know this kit fits my MerCruiser drive?\u003c\/summary\u003e\n \u003cp\u003eThis kit is specifically for MerCruiser Alpha One Generation 2 stern drives made from 1991 onwards. The key identifier is the serial number, which must be 0D469859 or higher. Check your drive's serial number plate to confirm compatibility.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my transom bellows need replacing?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms of failing bellows include visible cracks or dry rot on the rubber, water inside the boat bilge area (especially after use), and a grinding or roaring noise from the transom, which often indicates a failed gimbal bearing due to water intrusion.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between Sierra 18-8206 and 18-8206-1?\u003c\/summary\u003e\n \u003cp\u003eWhile both are transom seal kits, the Sierra 18-8206-1 part number typically includes a greasable gimbal bearing, whereas the 18-8206 may include a non-greasable bearing. This kit is built to the specification of the greasable-bearing version for easier maintenance.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should these components be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a general maintenance guideline, transom bellows should be inspected annually for cracks or damage and typically replaced every 3-5 years, depending on usage (freshwater vs. saltwater) and storage conditions.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I replace just one of the bellows instead of the whole kit?\u003c\/summary\u003e\n \u003cp\u003eWhile possible, it is highly recommended to replace all bellows and the gimbal bearing at the same time. The components are exposed to the same conditions and age at a similar rate. Replacing the full kit is a preventative measure that saves significant labor and cost down the line.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717899915579,"sku":"2022-31A1-001","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/2022-31A1-001.png?v=1762937840"},{"product_id":"transom-seal-bellows-kit-fits-volvo-penta-sx-dp-omc-cobra-replaces-3854127-3841481-911826","title":"Transom Seal Bellows Kit – Fits Volvo Penta SX\/DP \u0026 OMC Cobra (Replaces 3854127, 3841481, 911826)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eTransom Seal Bellows Kit – Fits Volvo Penta SX\/DP \u0026amp; OMC Cobra Stern Drives (Replaces 3854127, 3841481, 911826)\u003c\/strong\u003e is engineered for Volvo Penta SX and DP series (SX-S, SX-C, SX-R, SX-M, DP-S) and OMC Cobra sterndrives from 1986–1993. It provides a complete component set to replace the critical rubber bellows, preventing water intrusion at the transom.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Volvo Penta part numbers 22197130, 23075752, and 3841481; OMC 3854127; Sierra 18-2765; CEF 500514K; and SLP 43.932.60.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for direct installation with clamp-on fittings.\u003c\/li\u003e\n\u003cli\u003eManufactured in an ISO9002 certified factory to meet or exceed OEM specifications.\u003c\/li\u003e\n\u003cli\u003eIncludes U-joint bellows, exhaust bellows, shift cable bellows, gimbal bearing, and gasket kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e22197130\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e23075752\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e3854127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2765\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500514K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSLP\u003c\/td\u003e\n \u003ctd\u003e43.932.60\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta applications, this kit is compatible with the SX, SX-S, SX-C, SX-R, SX-M, and DP-S\/DP-SM series drives.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-S\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-C\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-R\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-M\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S1\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-SM\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eFor OMC applications, this kit fits Cobra models manufactured between 1986 and 1993 that do not have a cone clutch.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"OMC (Johnson\/Evinrude) Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e3854127\u003c\/td\u003e\n \u003ctd\u003eWithout cone clutch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement with clamp-on fitting\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eClamp-on\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e1.61 kg (3.56 lbs)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBellows with clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (Aftermarket)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications using same materials as originals; produced in ISO9002 certified factory\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows with Clamp (Replaces 3854127, 3841481, 18-2765, 22197130)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows with Clamp (Replaces 3850426, 0767724, 18-1074, 9-72711)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Bellows (Replaces 911826, 89210, 18-2763)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x Gimbal Bearing\u003c\/span\u003e (Replaces 3853807, 18-2100, 9-72410, 21905, 0983937, 30-60794A4)\u003c\/li\u003e\n \u003cli\u003e1 x Outdrive Mounting Gasket Kit (Replaces 508105)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the sterndrive is in a safe, accessible position, either trimmed up or removed.\u003c\/li\u003e\n \u003cli\u003eRemove the outdrive by detaching the hydraulic trim rams and the main drive retaining nuts.\u003c\/li\u003e\n \u003cli\u003eCarefully disconnect the shift cable, speedometer hose (if equipped), and retaining clamps from the old bellows.\u003c\/li\u003e\n \u003cli\u003eRemove the old U-joint bellows, exhaust bellows, and shift cable bellows. Inspect the transom assembly for any damage or corrosion.\u003c\/li\u003e\n \u003cli\u003eRemove the old gimbal bearing using a slide hammer or bearing puller tool.\u003c\/li\u003e\n \u003cli\u003eClean all mating surfaces thoroughly before installing the new gimbal bearing and seals from the gasket kit.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing, ensuring it is properly seated and aligned.\u003c\/li\u003e\n \u003cli\u003eInstall the new shift cable, exhaust, and U-joint bellows, securing them tightly with the provided clamps.\u003c\/li\u003e\n \u003cli\u003eReconnect all components and reinstall the sterndrive. Torque all fasteners to the manufacturer's specifications.\u003c\/li\u003e\n \u003cli\u003eOnce assembled, lower the drive and check for water leaks in the bilge area before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my sterndrive?\u003c\/summary\u003e\u003cp\u003eCheck the compatibility tables for your specific Volvo Penta or OMC Cobra model and year. This kit is designed for Volvo Penta SX\/DP series and OMC Cobra drives from 1986–1993 that do not use a cone clutch. Verifying your part number against the cross-reference list is the best practice.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are signs that my bellows need replacing?\u003c\/summary\u003e\u003cp\u003eCommon signs of failure include visible cracks, tears, brittleness, or dry rot in the rubber. The most critical symptom is water leaking into the bilge area, which indicates a bellows has been compromised.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my transom bellows?\u003c\/summary\u003e\u003cp\u003eAs a preventative maintenance item, it is recommended to inspect bellows annually and replace them every 3-5 years. The interval can vary based on usage, storage conditions (sun exposure), and whether the boat is used in saltwater or freshwater.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the included gimbal bearing pre-greased?\u003c\/summary\u003e\u003cp\u003eThe gimbal bearing typically comes pre-greased from the factory, but it is best practice to verify and add a high-quality marine-grade grease as needed during the installation process to ensure longevity.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if I don't replace a failed bellows?\u003c\/summary\u003e\u003cp\u003eA failed bellows will allow water to enter the transom assembly, which can cause catastrophic damage to the gimbal bearing, U-joints, and other critical sterndrive components, potentially leading to the vessel sinking.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit fit an OMC King Cobra?\u003c\/summary\u003e\u003cp\u003eYes, it fits OMC King Cobra models from 1986–1993, specifically those without a cone clutch.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717900308795,"sku":"TS-OYNJ-ML73","price":87.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/TS-OYNJ-ML73.png?v=1762937854"},{"product_id":"exhaust-bellows-expander-tool-fits-mercruiser-alpha-one-gen-i-ii-bravo-1-2-3-mc-1-r-mr-blackhawk-replaces-91-45497a1-91-8m0096108","title":"Exhaust Bellows Expander Tool – Fits MerCruiser Alpha One Gen I\/II, Bravo 1\/2\/3, MC-1, R-MR, Blackhawk (Replaces 91-45497A1, 91-8M0096108)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eExhaust Bellows Expander Tool\u003c\/strong\u003e is a specialized marine tool for installing exhaust bellows on MerCruiser sterndrive units. It is designed to fit a wide range of models, including Alpha One (Gen I and Gen II), Bravo (1, 2, and 3), Blackhawk, MC-1, and R-MR drives. The tool simplifies installation by stretching the exhaust bellows, allowing it to pass easily through the exhaust hole in the bell housing for a secure connection.\u003c\/p\u003e\n \u003cp\u003eThis tool directly replaces MerCruiser part numbers 91-45497A1 and 91-8M0096108, as well as aftermarket equivalents from Sierra (18-9847), GLM (90360), and Mallory (79811).\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eFeatures a manual scissor handle for controlled operation.\u003c\/li\u003e\n \u003cli\u003eConstructed from steel with a black oxide finish for durability.\u003c\/li\u003e\n \u003cli\u003eHandle includes an anti-slip function for a better grip during use.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e91-8M0096108 \/ 8M0096108\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-9847\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e90360\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e79811\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eThis tool is confirmed to work with the following MerCruiser sterndrive models.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen I\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n\u003ctd\u003e1991 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo 1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo 2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo 3\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBlackhawk\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMC-1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eR-MR\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Expander Tool\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual operation with scissor handle\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eSteel with black oxide finish\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.61 kg (1.35 lbs)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eAnti-slip function on scissor handle for better grip\u003c\/dd\u003e\n \u003c\/dl\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows Expander Tool (91-45497A1)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eEnsure the engine is off and the sterndrive is in a safe, accessible position before beginning work.\u003c\/li\u003e\n \u003cli\u003eInsert the closed end of the expander tool into the new exhaust bellow.\u003c\/li\u003e\n \u003cli\u003eFirmly squeeze the scissor handles to stretch the bellow open to the required diameter.\u003c\/li\u003e\n \u003cli\u003eWhile keeping the bellow expanded, carefully guide it through the exhaust opening in the bell housing until it is properly seated.\u003c\/li\u003e\n \u003cli\u003eOnce the bellow is in place, slowly release the pressure on the tool's handles to allow it to contract.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the tool and visually inspect the bellow to confirm it is securely and evenly installed.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\u003csummary\u003eWill this tool fit my specific MerCruiser model?\u003c\/summary\u003e\u003cp\u003eThis tool is designed for a broad range of MerCruiser sterndrives, including Alpha One (Gen I \u0026amp; II), Bravo (1, 2, 3), Blackhawk, MC-1, and R-MR models. Please consult the compatibility table and verify your part number to ensure a correct fit.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eHow does this tool work?\u003c\/summary\u003e\u003cp\u003eThe tool functions like a pair of reverse-action pliers or scissors. When you squeeze the handles, the opposite end expands, stretching the exhaust bellow. This makes it easier to install the bellow through the tight-fitting hole in the bell housing.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eIs this tool necessary for installing an exhaust bellow?\u003c\/summary\u003e\u003cp\u003eWhile it may be possible to install a bellow without this tool, it is extremely difficult and can lead to damaging the new bellow or improper installation. This expander tool is highly recommended by professionals to ensure the job is done correctly and efficiently.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhat are the signs that my old exhaust bellow has failed?\u003c\/summary\u003e\u003cp\u003eCommon signs of a failed exhaust bellow include water leaking into the bilge area, a noticeable change in engine exhaust sound, or visible cracks and deterioration on the bellow itself during inspection.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eIs this an OEM MerCruiser tool?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement part, not an original equipment manufacturer (OEM) tool. It is engineered to meet or exceed OEM specifications for fit and function, providing a reliable and cost-effective alternative.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhat is the tool made of?\u003c\/summary\u003e\u003cp\u003eIt is constructed from steel with a black oxide finish to resist corrosion and provide long-lasting durability in a marine environment.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717900931387,"sku":"6N-R1DP-0S58","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/6N-R1DP-0S58.png?v=1762937878"},{"product_id":"exhaust-bellows-expander-tool-fits-mercury-mercruiser-alpha-i-ii-bravo-1-2-3-and-blackhawk-stern-drives-replaces-91-45497a1-8m0096108","title":"Exhaust Bellows Expander Tool – Fits Mercury MerCruiser Alpha I\/II, Bravo 1\/2\/3, and Blackhawk Stern Drives (Replaces 91-45497A1, 8M0096108)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eExhaust Bellows Expander Tool\u003c\/strong\u003e simplifies the installation of exhaust bellows on a wide range of MerCruiser stern drives. It is specifically designed for MC-I, R-MR, Alpha One (Gen 1 \u0026amp; Gen 2), Bravo (1, 2, \u0026amp; 3), and Blackhawk drive units, ensuring a proper fit and seal.\u003c\/p\u003e\n \u003cp\u003eIt serves as a direct interchange for Mercury\/MerCruiser 91-45497A1 and 8M0096108, as well as aftermarket equivalents Sierra 18-9847, GLM 90360, and Mallory 9-79811.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eFeatures a scissor handle design for effective manual operation.\u003c\/li\u003e\n \u003cli\u003eOpens with a screw lock mechanism for precise control during installation.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable steel with vinyl-gripped alloy steel handles for longevity.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ MerCruiser\u003c\/td\u003e\n \u003ctd\u003e8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-9847\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e90360\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-79811\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eMC-1\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eR-MR\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eAlpha One (Gen 1)\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eBravo One\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eBravo Two\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eBravo Three\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003eFor exhaust bellows installation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Installation Tool\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual operation with scissor handle design\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eSteel\u003c\/dd\u003e\n \u003cdt\u003eHandle Material\u003c\/dt\u003e\n\u003cdd\u003eAlloy Steel with Vinyl Grip\u003c\/dd\u003e\n \u003cdt\u003eTool Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.6 kg (1.32 lbs)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e180 days (HeuroFosh brand)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eOpens with screw lock mechanism\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows Expander Tool (Replaces 91-45497A1\/8M0096108)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003ePlace the clamp over the end of the bellows.\u003c\/li\u003e\n \u003cli\u003eInsert the expander tool into the first convolution of the bellow.\u003c\/li\u003e\n \u003cli\u003ePull the tool handle until the bellow touches the flange on the bell housing, then release the tool.\u003c\/li\u003e\n \u003cli\u003eReposition the tool into the third convolution of the bellow.\u003c\/li\u003e\n \u003cli\u003ePull the bellows fully onto the bell housing flange, then insert the straight rod and 'U' pin into the tool to secure it.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The sterndrive unit must be removed from the vessel to use this tool correctly.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat specific MerCruiser drives is this tool compatible with?\u003c\/summary\u003e\n \u003cp\u003eThis expander tool is designed for a broad range of MerCruiser stern drives, including MC-I, R-MR, Alpha One (Gen 1), Alpha One (Gen 2), Bravo One, Bravo Two, Bravo Three, and Blackhawk models.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDo I have to remove the sterndrive to use this tool?\u003c\/summary\u003e\n \u003cp\u003eYes, the sterndrive must be removed from the boat to access the exhaust bellows and properly use this installation tool.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my exhaust bellows need to be replaced?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of a failing exhaust bellow include visible cracks or splits, water leaking into the bilge area, or unusual exhaust noise. Regular inspection during maintenance is the best way to catch wear early.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should I inspect or replace the exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eAs a general guideline, marine exhaust bellows should be inspected annually for any signs of wear, cracking, or deterioration. Replacement intervals can vary based on usage (freshwater vs. saltwater) and storage conditions, but they are typically replaced every 3-5 years or as needed.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow does the screw lock mechanism work?\u003c\/summary\u003e\n \u003cp\u003eThe screw lock mechanism allows you to open the tool to a specific width and lock it in place. This provides precise, steady expansion of the bellows, making it easier to guide onto the bell housing flange without slipping.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717902930235,"sku":"C2-N0ZA-W1DY","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/C2-N0ZA-W1DY.png?v=1762937939"},{"product_id":"transom-bellows-repair-kit-fits-mercruiser-alpha-one-generation-2-replaces-30-803099t1-glm-21960-sierra-18-8206","title":"Transom Bellows Repair Kit – Fits MerCruiser Alpha One Generation 2 (Replaces 30-803099T1, GLM 21960, Sierra 18-8206)","description":"\u003csection\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eMerCruiser Alpha 1 Gen 2 Transom Bellows Repair Kit\u003c\/strong\u003e is designed for the comprehensive service of MerCruiser Alpha One Generation 2 stern drives manufactured from 1991 and up (serial numbers 0D469859 and higher). It provides all the essential components to restore the seal and function of the transom assembly.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury part number 30-803099T1 and interchanges with aftermarket references GLM 21960 and Sierra 18-8206.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned for outboard stern drive installations.\u003c\/li\u003e\n \u003cli\u003eConstructed with marine-grade neoprene and stainless steel for resistance to water, oil, and fuel.\u003c\/li\u003e\n \u003cli\u003eIncludes U-Joint, Exhaust, and Shift Cable bellows, gimbal bearing, gaskets, and hoses for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e30-803099T1 \/ 803099T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21960\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8206\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser applications, verify your engine’s serial number falls within the specified ranges to ensure correct fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1991–1995\u003c\/td\u003e\n \u003ctd\u003e30-803099T1\u003c\/td\u003e\n \u003ctd\u003eSerial numbers: 0D469859 through 0F679999\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1996–1997\u003c\/td\u003e\n \u003ctd\u003e30-803099T1\u003c\/td\u003e\n \u003ctd\u003eSerial numbers: 0F680000 through 0K999999\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen 2\u003c\/td\u003e\n \u003ctd\u003eAll\u003c\/td\u003e\n \u003ctd\u003eBoth\u003c\/td\u003e\n \u003ctd\u003e1998 and up\u003c\/td\u003e\n \u003ctd\u003e30-803099T1\u003c\/td\u003e\n \u003ctd\u003eSerial numbers: 0L100040 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Bellows Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eOutboard Stern Drive\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eTransom Mount\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene (Bellows), Stainless Steel (Clamps)\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e13.9 × 8.4 × 6.3 inches (353.1 × 213.4 × 160 mm) [package dimensions]\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e5.00 lbs (2.27 kg)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eClamp-style\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade materials resistant to water, oil, and fuel\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × U-Joint Bellows Assembly (816431A1)\u003c\/li\u003e\n \u003cli\u003e1 × Exhaust Bellows Assembly (18654A1\/8M0124227)\u003c\/li\u003e\n \u003cli\u003e1 × Bearing Assembly (30-862540A3\/30-879194A01\/30-8M2010910)\u003c\/li\u003e\n \u003cli\u003e1 × Shift Cable Bellows Assembly (74639A2)\u003c\/li\u003e\n \u003cli\u003e1 × Water Hose (32-4172533\/32-8M0062309\/32-8M0109048)\u003c\/li\u003e\n \u003cli\u003e1 × Alpha Outdrive Mounting Gasket Kit (27-94996Q2\/27-8M0091545)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the boat's battery and safely remove the stern drive unit from the transom assembly.\u003c\/li\u003e\n \u003cli\u003eCarefully cut and remove the old U-joint, exhaust, and shift cable bellows. Note their orientation.\u003c\/li\u003e\n \u003cli\u003eRemove the old gimbal bearing. Thoroughly clean all mounting surfaces and bell housing of any old sealant or debris.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing and the outdrive mounting gasket kit onto the transom.\u003c\/li\u003e\n \u003cli\u003eFit the new shift cable bellows, U-joint bellows, and exhaust bellows, ensuring each is properly seated.\u003c\/li\u003e\n \u003cli\u003eSecure all new bellows with the provided stainless steel clamps, tightening them to manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003eReinstall the stern drive unit, reattach all connections, and test for proper function and leaks in the water.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm this kit fits my MerCruiser drive?\u003c\/summary\u003e\n \u003cp\u003eThis kit is specifically for Alpha One Generation 2 stern drives (1991 and newer). The most reliable way to confirm fitment is by checking your drive's serial number. It must be 0D469859 or higher. Refer to the compatibility table for specific ranges.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my transom bellows need to be replaced?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of failure include visible cracks, splits, or perishing of the rubber. The most critical symptom is finding water inside the boat around the transom or bell housing, which indicates a leak in the U-joint bellows.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs the gimbal bearing always included in these kits?\u003c\/summary\u003e\n \u003cp\u003eYes, this is a comprehensive repair kit that includes the gimbal bearing assembly (OEM ref 30-862540A3), alongside all necessary bellows, gaskets, and water hose for a complete service.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my transom bellows?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance item, it is recommended to inspect bellows annually for any signs of wear or cracking. A full replacement is advised every 3-5 years, depending on usage (saltwater vs. freshwater) and storage conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717903159611,"sku":"17B3007OC","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B3007OC.png?v=1762937948"},{"product_id":"exhaust-bellows-expander-tool-fits-mercruiser-alpha-one-bravo-series-replaces-91-45497a1-8m0096108","title":"Exhaust Bellows Expander Tool – Fits MerCruiser Alpha One \u0026 Bravo Series (Replaces 91-45497A1, 8M0096108)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis specialized \u003cstrong\u003eExhaust Bellows Expander Tool\u003c\/strong\u003e is engineered to simplify the installation of exhaust bellows on a wide range of MerCruiser stern drives. It is designed for use with Alpha One (Gen I \u0026amp; II) and Bravo (1, 2, \u0026amp; 3) series models manufactured from 1980 to the present, ensuring proper stretching and seating of the bellows inside the bell housing.\u003c\/p\u003e\n \u003cp\u003eIt serves as a direct replacement for Mercury\/MerCruiser 91-45497A1, 91-8M0096108, and 8M0096108, as well as aftermarket parts Sierra 18-9847, GLM 90360, and Mallory 79811.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eFeatures a scissor-style design for manual operation.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable steel for long-term service.\u003c\/li\u003e\n \u003cli\u003eEquipped with a non-slip PVC-covered handle for a secure grip.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ MerCruiser\u003c\/td\u003e\n \u003ctd\u003e91-8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ MerCruiser\u003c\/td\u003e\n \u003ctd\u003e8M0096108\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-9847\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e90360\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e79811\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eThis tool is designed for a variety of MerCruiser stern drive models. Please check your serial number for exact fitment where noted.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1980–Current\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1998–Current\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eSpecific for 0L100040 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo One\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1988–Current\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eAll serial numbers\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo Two\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1988–Current\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eAll serial numbers\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo Three\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1988–Current\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eAll serial numbers\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo XR One\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1998–2009\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eSerial 0L914990 to current\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo XR Sportmaster\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1998–2009\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003eSerial 0M052945 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBlackhawk\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll Years\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eMC-1\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll Years\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eR-MR\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eAll Years\u003c\/td\u003e\n \u003ctd\u003e91-45497A1\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Installation Tool\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual operation\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eSteel\u003c\/dd\u003e\n \u003cdt\u003eHandle\u003c\/dt\u003e\n\u003cdd\u003ePVC-covered (non-slip)\u003c\/dd\u003e\n \u003cdt\u003eDesign\u003c\/dt\u003e\n\u003cdd\u003eScissor-style with tong-like grip\u003c\/dd\u003e\n \u003cdt\u003eCompatible With\u003c\/dt\u003e\n\u003cdd\u003eMerCruiser Alpha One, Alpha Gen II, Bravo 1, 2, 3, Blackhawk, MC-1, R-MR stern drives\u003c\/dd\u003e\n \u003cdt\u003eUsage Note\u003c\/dt\u003e\n\u003cdd\u003eStern drive must be removed for proper use\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\/Metal\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e~0.63 kg (1.38 lb)\u003c\/dd\u003e\n \u003cdt\u003eCountry of Manufacture\u003c\/dt\u003e\n\u003cdd\u003eUSA (for MBS brand)\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows Expander Tool (Replaces 91-45497A1)\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eFirst, install the new exhaust bellows onto the gimbal housing.\u003c\/li\u003e\n \u003cli\u003eInsert the tool into the bell housing and use it to grab and stretch the exhaust bellows through the exhaust hole.\u003c\/li\u003e\n \u003cli\u003eOnce the bellows is properly seated, securely tighten the hose clamp.\u003c\/li\u003e\n \u003cli\u003eNote: For correct and safe installation, the stern drive unit must be completely removed from the vessel.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhich MerCruiser drives is this tool for?\u003c\/summary\u003e\n \u003cp\u003eThis tool is designed for a wide range of MerCruiser stern drives, including the Alpha One (Generations I \u0026amp; II), Bravo Series (One, Two, Three, XR One, XR Sportmaster), Blackhawk, MC-1, and R-MR models from 1980 to current.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDo I have to remove the stern drive to use this tool?\u003c\/summary\u003e\n \u003cp\u003eYes, the stern drive must be removed to access the exhaust bellows and use this tool correctly. It is not possible to perform the installation with the drive in place.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the advantage of this tool's design?\u003c\/summary\u003e\n \u003cp\u003eThe scissor-style mechanism provides the leverage needed to stretch the new, stiff bellows into position, which is difficult to do by hand. The tong-like grip ensures a firm hold on the bellows for precise placement.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this tool made of plastic or metal?\u003c\/summary\u003e\n \u003cp\u003eThe tool is constructed from durable steel to withstand the force required for installation, with a PVC-coated handle for a comfortable, non-slip grip.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717904044347,"sku":"22SET001S1230","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/22SET001S1230.png?v=1762937982"},{"product_id":"exhaust-bellows-expander-tool-fits-mercruiser-alpha-one-bravo-blackhawk-replaces-91-45497a1","title":"Exhaust Bellows Expander Tool – Fits MerCruiser Alpha One, Bravo, Blackhawk (Replaces 91-45497A1)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eExhaust Bellows Expander Tool\u003c\/strong\u003e is a specialized, scissor-type instrument designed to stretch exhaust bellows for easier installation. It is specifically engineered for a wide range of MerCruiser stern drives, including Alpha One, Alpha One Generation II, Bravo One, Bravo Two, Bravo Three, Blackhawk, MC-1, and R\/MR models.\u003c\/p\u003e\n\u003cp\u003eThis tool directly replaces OEM part number 91-45497A1 and interchanges with several aftermarket equivalents, including Sierra 18-9847, GLM 90360, and Mallory 79811.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures a manual, scissor-type action with a screw lock for precise control.\u003c\/li\u003e\n\u003cli\u003eEquipped with a vinyl, anti-slip grip for secure handling during use.\u003c\/li\u003e\n\u003cli\u003eNote: The stern drive must be removed before this tool can be used.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8M0096108\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-9847\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e90360\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e79811\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis tool is designed for the following MerCruiser stern drive models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eDrive Type\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo One\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo Two\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo Three\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBlackhawk\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMC-1\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eR\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMR\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e91-45497A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows Expander Tool\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eManual; Scissor-type with screw lock\u003c\/dd\u003e\n\u003cdt\u003eHandle Type\u003c\/dt\u003e\n\u003cdd\u003eScissor handle with vinyl\/anti-slip grip\u003c\/dd\u003e\n\u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eSteel\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eStretches exhaust bellows for installation\u003c\/dd\u003e\n\u003cdt\u003eCompatible Drives\u003c\/dt\u003e\n\u003cdd\u003eMerCruiser Alpha One, Alpha One Gen II, Bravo One, Bravo Two, Bravo Three, Blackhawk, MC-1, R\/MR\u003c\/dd\u003e\n\u003cdt\u003eUsage Notes\u003c\/dt\u003e\n\u003cdd\u003eStern drive must be removed before use\u003c\/dd\u003e\n\u003cdt\u003eCountry of Origin\u003c\/dt\u003e\n\u003cdd\u003eUSA (for MBS\/OEM version)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Exhaust Bellows Expander Tool (Replaces 91-45497A1\/8M0096108)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eInstall the bellows onto the expander tool arms.\u003c\/li\u003e\n\u003cli\u003ePass the bellows through the vent hole in the gimbal housing.\u003c\/li\u003e\n\u003cli\u003eExpand the tool to stretch the bellows into place and tighten the hose clamps.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eNote: The stern drive must be fully removed from the vessel before using this tool.\u003c\/p\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich MerCruiser drives is this tool compatible with?\u003c\/summary\u003e\n\u003cp\u003eThis tool is designed for a broad range of MerCruiser stern drives: Alpha One, Alpha One Gen II, Bravo One, Bravo Two, Bravo Three, Blackhawk, MC-1, and R\/MR models.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it necessary to remove the stern drive to use this tool?\u003c\/summary\u003e\n\u003cp\u003eYes, for proper access and safe installation, the stern drive assembly must be removed from the vessel before you can use this tool to install the exhaust bellows.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is this tool made of?\u003c\/summary\u003e\n\u003cp\u003eThe expander tool is constructed from durable steel to handle the force required to stretch the bellows. It also features a vinyl, anti-slip grip for secure handling.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I use this tool?\u003c\/summary\u003e\n\u003cp\u003eFirst, fit the exhaust bellows over the arms of the tool. Next, pass the bellows through the appropriate opening in the gimbal housing. Finally, operate the scissor handle to stretch the bellows into position so you can tighten the clamp.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717904372027,"sku":"22ET001OC","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/22ET001OC.png?v=1762937997"},{"product_id":"transom-seal-bellows-kit-fits-volvo-penta-sx-dp-omc-cobra-replaces-3854127-22197130-3841481","title":"Transom Seal Bellows Kit – Fits Volvo Penta SX\/DP \u0026 OMC Cobra (Replaces 3854127, 22197130, 3841481)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eTransom Seal Bellows Kit – Fits Volvo Penta SX\/DP \u0026amp; OMC Cobra Stern Drives (Replaces 3854127)\u003c\/strong\u003e provides a complete, watertight seal between the transom and the outdrive assembly. It is designed specifically for Volvo Penta SX and DP series stern drives (1994–2006, non-cone clutch) and OMC Cobra stern drives (1986–1993). This prevents water intrusion, protecting critical gimbal bearings, U-joints, and drive components.\u003c\/p\u003e\n\u003cp\u003eThe kit serves as a direct aftermarket replacement for Volvo Penta part numbers 22197130, 23075752, and 3841481, as well as OMC references 3854127, 983973, and 987467.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered for direct replacement with simple clamp-on fittings.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable, marine-grade CR rubber to resist saltwater and oil.\u003c\/li\u003e\n \u003cli\u003eIncludes essential high-grade SS316 stainless steel clamps and clips for secure attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e22197130 \/ 23075752 \/ 3841481\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e3854127 \/ 983973 \/ 987467\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2765\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500514K\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model and year in the table below to ensure accurate fitment.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta models, this kit fits various non-cone clutch drives from 1994–2006.\u003c\/p\u003e\n\u003cp\u003eFor OMC models, this kit is compatible with Cobra drives from 1986–1993 without a cone clutch.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1994–2006\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003eNon-cone clutch models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-S\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1994–2006\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003eNon-cone clutch models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-C\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1994–2006\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003eNon-cone clutch models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-R\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1994–2006\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003eNon-cone clutch models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eSX-M\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1994–2006\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003eNon-cone clutch models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eDP-S\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1994–2006\u003c\/td\u003e\n \u003ctd\u003e22197130\/23075752\/3841481\u003c\/td\u003e\n \u003ctd\u003eNon-cone clutch models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e3854127\/983973\/987467\u003c\/td\u003e\n \u003ctd\u003eWithout cone clutch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTransom Seal Bellows Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement with clamp-on fitting\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eClamp-on\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade rubber (CR material)\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBellows with stainless steel clamps\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (aftermarket)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications; \u003cspan style=\"color:#d0021b;\"\u003estainless steel SS316 clamps and clips\u003c\/span\u003e\n\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x U-Joint Bellows with Clamp (Replaces 3854127\/3841481\/22197130)\u003c\/li\u003e\n \u003cli\u003e1 x Exhaust Bellows with Clamp (Replaces 3850426\/914036\/767724)\u003c\/li\u003e\n \u003cli\u003e1 x Shift Cable Bellows (Replaces 911826)\u003c\/li\u003e\n \u003cli\u003e1 x Seal with Gasket Kit (Replaces 508105)\u003c\/li\u003e\n \u003cli\u003e1 x Gimbal Bearing (Replaces 3853807\/983937)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Hose Clamps and Clips (SS316 stainless steel)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the boat's battery and trim the outdrive to the \"up\" or \"trailer\" position.\u003c\/li\u003e\n \u003cli\u003eRemove the stern drive assembly from the transom shield according to your service manual.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old clamps and cut away the old U-joint, exhaust, and shift cable bellows.\u003c\/li\u003e\n \u003cli\u003eInspect the gimbal bearing and remove it using a slide hammer puller if replacement is needed.\u003c\/li\u003e\n \u003cli\u003eClean all mating surfaces on the transom housing and bell housing thoroughly.\u003c\/li\u003e\n \u003cli\u003eInstall the new gimbal bearing, ensuring it is properly seated.\u003c\/li\u003e\n \u003cli\u003eFit the new shift cable bellow, followed by the exhaust and U-joint bellows.\u003c\/li\u003e\n \u003cli\u003eSecure all new bellows with the provided stainless steel clamps, ensuring they are tight and properly positioned.\u003c\/li\u003e\n \u003cli\u003eRe-install the stern drive assembly, following the reverse order of removal.\u003c\/li\u003e\n \u003cli\u003eOnce assembled, leak-test the installation in the water and check for proper shift and steering operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if this kit fits my specific engine model?\u003c\/summary\u003e\n \u003cp\u003eThis kit is designed for a range of Volvo Penta SX\/DP and OMC Cobra drives. The best way to confirm is by checking your model and year against the compatibility table provided. Also, cross-reference your existing part numbers with those listed in our Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs that my old transom seal is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include visible cracks or tears in the rubber bellows, water inside the bellows when inspected, a stiff or noisy gimbal bearing, or water leaking into the bilge area from the transom assembly. Regular inspection during maintenance is key.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between the U-joint and exhaust bellows?\u003c\/summary\u003e\n \u003cp\u003eThe U-joint bellows (or drive bellow) protects the universal joints that connect the engine to the outdrive. The exhaust bellow routes engine exhaust through the outdrive. Both are critical for preventing water intrusion.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should transom bellows be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative maintenance item, most manufacturers recommend inspecting bellows annually and replacing them every 3–5 years, depending on usage (freshwater vs. saltwater) and storage conditions. If you see any signs of wear, replace them immediately.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eAre special tools required for this installation?\u003c\/summary\u003e\n \u003cp\u003eYes, replacing the gimbal bearing typically requires a slide hammer with a bearing puller attachment. You may also need a special bellows adhesive and clamp installation tools depending on the specific drive model. A full set of mechanic's tools is a must.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I replace just one failed bellows instead of the whole kit?\u003c\/summary\u003e\n \u003cp\u003eWhile possible, it is not recommended. The bellows are made of similar materials and exposed to the same conditions, so if one has failed, the others are likely near the end of their service life. Replacing the entire kit at once is more cost-effective and prevents repeated labor.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717904732475,"sku":"WT-G3XE-CQOQ","price":82.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/WT-G3XE-CQOQ.png?v=1762938017"},{"product_id":"exhaust-bellows-fits-omc-cobra-volvo-penta-sx-replaces-3850426-875848","title":"Exhaust Bellows – Fits OMC Cobra \u0026 Volvo Penta SX (Replaces 3850426, 875848)","description":"\u003cstyle\u003e\n\/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n\/* Base table styles *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n}\n\n\/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\ntable.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n}\n\n\/* Small screen optimization *\/\n@media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n}\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eExhaust Bellows\u003c\/strong\u003e is designed for a precise fit on a wide range of OMC Cobra V4, V6, and V8 engines from 1986–1993, as well as Volvo Penta AQ series sterndrives (SX \u0026amp; DP) from 1994 to the present. It provides a reliable seal for the exhaust passage between the transom assembly and the sterndrive.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for OEM part numbers like OMC 3850426\/914036 and Volvo Penta 875848, along with aftermarket equivalents such as GLM 89190 and Sierra 18-2768.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement design for straightforward installation.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable rubber\/neoprene for marine environments.\u003c\/li\u003e\n\u003cli\u003eFeatures a hose-type connection for a secure fit with clamps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e3850426 \/ 914036\u003c\/td\u003e\n \u003ctd\u003eOEM\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003e875848\u003c\/td\u003e\n \u003ctd\u003eOEM\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89190\u003c\/td\u003e\n \u003ctd\u003eAftermarket\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2768\u003c\/td\u003e\n \u003ctd\u003eAftermarket\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor OMC, this part fits all V4, V6, and V8 Cobra models from 1986–1993 and Cobra SX models from 1994–1998.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta, it is compatible with various AQ-series engines using SX and DP sterndrives from 1994 onwards.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra (All V4, V6, V8)\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1986–1993\u003c\/td\u003e\n \u003ctd\u003e3850426\/914036\u003c\/td\u003e\n \u003ctd\u003eStandard Cobra\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003eCobra SX\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–1998\u003c\/td\u003e\n \u003ctd\u003e3850426\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ270-290, AQSP, AQDP\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to present\u003c\/td\u003e\n \u003ctd\u003e875848\u003c\/td\u003e\n \u003ctd\u003eSX \u0026amp; DP drives\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n \u003ctd\u003eAQ200-290\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to present\u003c\/td\u003e\n \u003ctd\u003e875848\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Bellows\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eHose-type connection with clamps\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eHose connection\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eDoes not include flapper valves\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Exhaust Bellows (Replaces 3850426 \u0026amp; 875848)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the battery is disconnected for safety.\u003c\/li\u003e\n \u003cli\u003eGain clear access to the sterndrive's exhaust bellows, typically by trimming the drive up.\u003c\/li\u003e\n \u003cli\u003eCarefully loosen and remove the old hose clamps securing the bellows at both ends.\u003c\/li\u003e\n \u003cli\u003eRemove the old bellows. Inspect and thoroughly clean the mounting surfaces on the transom assembly and sterndrive to ensure a proper seal.\u003c\/li\u003e\n \u003cli\u003ePosition the new bellows and secure it with new, correctly-sized marine-grade hose clamps.\u003c\/li\u003e\n \u003cli\u003eTighten the clamps to the manufacturer's recommended torque to prevent leaks. Do not overtighten.\u003c\/li\u003e\n \u003cli\u003eAfter reassembly, run the engine with a water supply and check for any exhaust or water leaks around the new bellows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm this bellows fits my specific boat?\u003c\/summary\u003e\u003cp\u003eThis part is compatible with OMC Cobra (1986-1993) and Volvo Penta SX\/DP (1994-present) drives. Please verify your drive model and year, and cross-reference the OEM part numbers (3850426 for OMC, 875848 for Volvo Penta) listed in our compatibility tables.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this exhaust bellows include the internal flapper valve?\u003c\/summary\u003e\u003cp\u003eNo, this bellows does not come with an internal flapper valve. It is a direct replacement for exhaust systems that either do not require one or have a separate flapper assembly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing exhaust bellows?\u003c\/summary\u003e\u003cp\u003eCommon signs include a loud exhaust noise from the stern, water entering the bilge (especially when stationary or at low speeds), visible cracks or splits in the rubber, or a carbon monoxide alarm sounding in the cabin.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my exhaust bellows?\u003c\/summary\u003e\u003cp\u003eIt is recommended to inspect exhaust bellows annually and replace them every 3-5 years as part of preventative maintenance, or immediately if any signs of wear, cracking, or damage are found.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717904961851,"sku":"RO-Z6ZZ-KTS6","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/RO-Z6ZZ-KTS6.png?v=1762938026"}],"url":"https:\/\/seasierra.com\/collections\/bellow.oembed?page=2","provider":"SeaSierra","version":"1.0","type":"link"}