{"title":"Tensioner Pulley","description":"","products":[{"product_id":"water-pump-pulley-fits-mercruiser-volvo-penta-v6-v8-engines-replaces-8m0153706-807729t","title":"Water Pump Pulley – Fits MerCruiser\/Volvo Penta V6 \u0026 V8 Engines (Replaces 8M0153706, 807729T)","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 replacement \u003cstrong\u003eWater Pump Pulley – Fits MerCruiser\/Volvo Penta V6 \u0026amp; V8 Engines\u003c\/strong\u003e is designed for MerCruiser 4.3L to 8.2L V6 and V8 engines manufactured between 1996 and 2014 with serpentine belt systems. It is also compatible with various Volvo Penta V6 and V8 engines that use the corresponding OEM cross-reference numbers.\u003c\/p\u003e\n\u003cp\u003eThis component is a direct interchange for Mercury\/MerCruiser part numbers 8M0153706, 807729T, and 8M0192199, as well as Volvo Penta numbers 807729 and 807729T.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for serpentine belt drive systems.\u003c\/li\u003e\n\u003cli\u003eApplication is for standard cooling systems only.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable metal for longevity.\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\u003e8M0153706\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n\u003ctd\u003e807729T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8M0192199\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e807729\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e807729T\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 models, this pulley is compatible with a wide range of V6 and V8 engines from 1996–2014 equipped with a serpentine belt.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta, compatibility is based on matching the OEM part number 807729 or 807729T, as specific model data varies.\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\u003e4.3LX (GEN+)\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e4.3LXH (GEN+)\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e7.4L\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.2L MPI\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI DTS\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2014\u003c\/td\u003e\n\u003ctd\u003e8M0153706\/807729T\u003c\/td\u003e\n\u003ctd\u003eFor serpentine belt systems only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e4.3L Alpha 4V EST\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e8M0153706\u003c\/td\u003e\n\u003ctd\u003eSerial No. 1G417302-1G499999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eVarious V6\/V8 models\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e807729\/807729T\u003c\/td\u003e\n\u003ctd\u003eCompatible with the Volvo cross-reference numbers\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\u003eWater Pump Pulley\u003c\/dd\u003e\n\u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eMetal\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eSerpentine belt system\u003c\/dd\u003e\n\u003cdt\u003eDiameter\u003c\/dt\u003e\n\u003cdd\u003e150 mm (5.9 in)\u003c\/dd\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.62 kg (1.36 lbs)\u003c\/dd\u003e\n\u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eLength: 203 mm (8.00 in), Width: 190.5 mm (7.50 in), Height: 193.5 mm (7.62 in)\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eStandard cooling systems only\u003c\/dd\u003e\n\u003cdt\u003eCompatible With\u003c\/dt\u003e\n\u003cdd\u003eSerpentine belt drive systems\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Water Pump Pulley (8M0153706\/807729T\/8M0192199)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the negative battery terminal to prevent accidental starts.\u003c\/li\u003e\n\u003cli\u003eLocate the serpentine belt tensioner and use a breaker bar or tensioner tool to release the tension, then slip the belt off the water pump pulley.\u003c\/li\u003e\n\u003cli\u003eRemove the bolts securing the old pulley to the water pump flange. You may need to hold the pulley stationary to prevent it from turning.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old pulley. Clean the mounting surface of the water pump flange to ensure a flush fit for the new part.\u003c\/li\u003e\n\u003cli\u003ePosition the new pulley onto the flange, aligning the bolt holes.\u003c\/li\u003e\n\u003cli\u003eThread the bolts by hand to prevent cross-threading, then tighten them in a star pattern to the manufacturer's recommended torque specifications.\u003c\/li\u003e\n\u003cli\u003eReinstall the serpentine belt, ensuring it is correctly routed on all pulleys. Release the tensioner.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery terminal. Start the engine and visually inspect the pulley for smooth, wobble-free operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this pulley fit my engine?\u003c\/summary\u003e\u003cp\u003eThis pulley fits most MerCruiser 4.3L–8.2L V6\/V8 engines (1996–2014) with serpentine belts and Volvo Penta V6\/V8 models using part numbers 807729 or 807729T. Always verify your part number and engine details against our compatibility table to ensure proper fitment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump pulley?\u003c\/summary\u003e\u003cp\u003eCommon signs include a persistent squealing or grinding noise from the engine bay, visible wobble or cracks in the pulley, and potential engine overheating if the water pump's performance is compromised.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this pulley for a V-belt or serpentine system?\u003c\/summary\u003e\u003cp\u003eThis pulley is designed specifically for serpentine belt systems. It is not compatible with older V-belt configurations.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow does this differ from the original OEM part?\u003c\/summary\u003e\u003cp\u003eWhile it performs identically to an OEM part, our aftermarket pulley is a cost-effective alternative. It is manufactured from high-quality metal to meet or exceed original factory specifications for fit, form, and function.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat common mistakes should I avoid during installation?\u003c\/summary\u003e\u003cp\u003eAvoid over-tightening the mounting bolts, which can damage the pulley or water pump flange. Ensure the pulley and mounting surface are clean before installation. Finally, double-check that the serpentine belt is routed correctly before starting the engine.\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). It is built to OEM-level specifications with comparable materials, manufactured in an ISO 9002 facility, and 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 is 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\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If 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\u003c\/details\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\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":50717884318011,"sku":"24TP001","price":45.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24TP001_1.jpg?v=1762937282"},{"product_id":"serpentine-belt-idler-pulley-fits-volvo-penta-3-0l-4-3l-5-0l-5-7l-8-1l-engines-replaces-3861009","title":"Serpentine Belt Idler Pulley – Fits Volvo Penta 3.0L, 4.3L, 5.0L, 5.7L, 8.1L Engines (Replaces 3861009)","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\u003eSerpentine Belt Idler Pulley\u003c\/strong\u003e is designed for a wide range of Volvo Penta marine gas engines, including 3.0L, 4.3L, 5.0L, 5.7L, and 8.1L models. It fits various GL, GXi, OSi, and Gi series engines manufactured from approximately 2000 to 2010, ensuring reliable performance for your sterndrive system.\u003c\/p\u003e\n\u003cp\u003eThis component is a direct replacement for Volvo Penta part number 3861009.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct-fit installation.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable metal housing to withstand marine environments.\u003c\/li\u003e\n\u003cli\u003eMaintains proper serpentine belt tension and alignment.\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\u003e3861009\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\u003eFits a broad range of Volvo Penta gas sterndrive engines. 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\u003eStroke\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\u003e3.0GLM-C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3.0GLP-C, 3.0GLP-D, 3.0GLP-E, 3.0GLP-J, 3.0GLP-N\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3.0GXi-J, 3.0GXiC-J\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GL-A, 4.3GL-B, 4.3GL-C, 4.3GL-D\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GL-E, 4.3GL-EF, 4.3GL-G, 4.3GL-GF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GL-J, A.3GL-JF, 4.3GL-P\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GXi-A, 4.3GXi-C, 4.3GXi-CF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3OSi-C, 4.3OSi-CF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GXi-D, 4.3GXi-DF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3OSi-D, 4.3OSi-DF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GXi-E, 4.3GXi-EF, 4.3OSi-E\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GXiE-M, 4.3GXiE-Q\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GXiE-225-R, V6-225-E-A, 4.3GXiE-225-S\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GXi-F\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GL-A, 5.0GL-B, 5.0GL-C, 5.0GL-D\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GL-E, 5.0GL-F, 5.0GL-FF, 5.0GL-H, 5.0GL-HF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GL-J, 5.0GL-JF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GXi-B, 5.0GXi-BF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GXi-E, 5.0GXi-EF, 5.0GXi-F, 5.0GXi-FF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GXi-G, 5.0GXi-GF, 5.0GXi-J, 5.0GXi-JF, 5.0GXi-N\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0OSi-A, 5.0OSi-B, 5.0OSi-BF, 5.0OSi-E, 5.0OSi-EF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0OSi-F, 5.0OSi-FF, 5.0OSi-G, 5.0OSi-GF, 5.0OSi-J, 5.0OSi-JF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7Gi-300-J, 5.7Gi-300-JF, 5.7OSi-300-J, 5.7OSi-300-JF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7GXi-J, 5.7GXi-JF, 5.7OSXi-J, 5.7OSXi-JF, 5.7GXi-N, 5.7Gi-300-N\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e8.1Gi-J, 8.1Gi-JF, 8.1OSi-J, 8.1OSi-JF\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e8.1GXi-J, 8.1GXi-JF, 8.1GSi-A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3861009\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\u003eSerpentine Belt Idler Pulley\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMetal\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e3.5 inches diameter (88.9 mm)\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 year (from aftermarket suppliers)\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 Serpentine Belt Idler Pulley (3861009)\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\u003eLocate the serpentine belt tensioner and release the tension on the belt.\u003c\/li\u003e\n  \u003cli\u003eRemove the serpentine belt from the idler pulley.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and remove the old idler pulley. Note the orientation and any washers or spacers.\u003c\/li\u003e\n  \u003cli\u003eInstall the new idler pulley, ensuring it is correctly aligned.\u003c\/li\u003e\n  \u003cli\u003eTorque the mounting bolt to the manufacturer’s specified value.\u003c\/li\u003e\n  \u003cli\u003eReroute the serpentine belt according to the engine's diagram.\u003c\/li\u003e\n  \u003cli\u003eApply tension back to the belt using the tensioner.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery and start the engine to check for proper operation and alignment.\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 idler pulley is failing?\u003c\/summary\u003e\u003cp\u003eCommon signs of a failing idler pulley include a squealing or grinding noise from the engine bay, visible wobble or play in the pulley, and uneven wear or damage to the serpentine belt.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I replace just the pulley, or do I need the entire tensioner assembly?\u003c\/summary\u003e\u003cp\u003eThis part is the idler pulley itself. In many cases, the idler pulley can be replaced independently of the belt tensioner assembly. However, inspect the tensioner for wear or weakness, as it may be wise to replace both if the tensioner is also old or failing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I inspect the serpentine belt and pulleys?\u003c\/summary\u003e\u003cp\u003eIt is good practice to visually inspect the serpentine belt and all pulleys during routine engine maintenance, such as oil changes. Listen for abnormal noises and check for belt wear. A comprehensive inspection should be performed at least annually.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between an idler pulley and a tensioner pulley?\u003c\/summary\u003e\u003cp\u003eAn idler pulley is a non-adjustable pulley that helps guide the serpentine belt. A tensioner pulley is attached to a spring-loaded or adjustable arm that applies pressure to the belt to maintain proper tension. This listing is for a stationary idler pulley.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs any special tool required for installation?\u003c\/summary\u003e\u003cp\u003eStandard metric or imperial sockets and a wrench set are usually sufficient. A belt tensioner tool or a long-handled breaker bar may be needed to release the belt tension safely and effectively.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between OEM and aftermarket parts?\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\u003eHow fast do you ship and what is the cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most locations; expedited options may be available at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is your 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\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 part, not an original equipment manufacturer (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\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\n","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717884350779,"sku":"23TP208","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23TP208_1.jpg?v=1762937283"},{"product_id":"double-belt-alternator-pulley-fits-volvo-penta-ad31-ad41-aqad30-40-series-replaces-841812","title":"Double Belt Alternator Pulley – Fits Volvo Penta AD31, AD41, AQAD30\/40 Series (Replaces 841812)","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\u003eDouble Belt Alternator Pulley\u003c\/strong\u003e is designed for a broad range of Volvo Penta inboard diesel engines, including the AD31, TAMD31, TMD31, AQAD31, AD41, TAMD41, TMD41, and AQAD41 series manufactured in the 1980s and 1990s. It ensures reliable power transmission from the engine to the alternator.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Volvo Penta part number 841812, offering a precise fit and restoring original performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for direct bolt-on installation.\u003c\/li\u003e\n  \u003cli\u003eDesigned for a double V-belt configuration.\u003c\/li\u003e\n  \u003cli\u003eIncludes a 1-year warranty against manufacturing defects.\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\u003e841812\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 compatible with the following Volvo Penta engine 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\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\u003eAD31A, AD31B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD31D, AD31L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD31P, AD31XD\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQAD30A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQAD31A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eKAD32P\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTMD31A, TMD31B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTMD31D, TMD31L-A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD31A, TAMD31B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD31D, TAMD31P, TAMD31L, TAMD31S\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD41A, AD41B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD41D\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAD41L, AD41P\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQAD40A, AQAD40B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQAD41A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD41A, TAMD41B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD41D\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTAMD41H, TAMD41L, TAMD41M, TAMD41P\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTMD41A, TMD41B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eTMD41D, TMD41L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s\u003c\/td\u003e\n\u003ctd\u003e841812\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\u003eDouble Belt Alternator Pulley\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect bolt-on replacement\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect mount to alternator shaft\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eDouble V-belt\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1-year warranty 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\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Double Belt Alternator Pulley (Replaces 841812)\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 to prevent electrical hazards.\u003c\/li\u003e\n  \u003cli\u003eLoosen the alternator tensioner and remove the drive belt from the pulley.\u003c\/li\u003e\n  \u003cli\u003eUse an impact wrench or appropriate pulley holding tool to remove the central retaining nut and slide the old pulley off the alternator shaft.\u003c\/li\u003e\n  \u003cli\u003eClean the alternator shaft and keyway, ensuring they are free of dirt and corrosion.\u003c\/li\u003e\n  \u003cli\u003eSlide the new pulley onto the shaft, aligning it with the keyway.\u003c\/li\u003e\n  \u003cli\u003eReinstall and tighten the retaining nut to the manufacturer's recommended torque specification.\u003c\/li\u003e\n  \u003cli\u003eReinstall the drive belt and set the correct tension.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery terminal and start the engine to verify proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow can I confirm this pulley fits my specific engine?\u003c\/summary\u003e\n  \u003cp\u003eThe most reliable method is to match the OEM part number 841812 from your existing pulley or service manual. You can also use our compatibility table to check if your engine model and year range are listed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a failing alternator pulley?\u003c\/summary\u003e\n  \u003cp\u003eSymptoms include a squealing or grinding noise from the engine bay, visible wobble or runout on the pulley, premature belt wear, and inconsistent charging system performance (flickering lights, battery issues).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs a special tool required for installation?\u003c\/summary\u003e\n  \u003cp\u003eYou may need an impact wrench or a specialized alternator pulley removal tool to loosen the central nut, as it is often very tight. The specific tool depends on your alternator model.\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":50717884449083,"sku":"21TP006","price":39.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TP006_1.jpg?v=1762937285"},{"product_id":"sea-water-pump-pulley-fits-mercruiser-4-3l-5-0l-5-7l-6-2l-8-1l-engines-replaces-8m0150724-862351t","title":"Sea Water Pump Pulley – Fits MerCruiser 4.3L, 5.0L, 5.7L, 6.2L, 8.1L Engines (Replaces 8M0150724, 862351T)","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 aftermarket \u003cstrong\u003eSea Water Pump Pulley\u003c\/strong\u003e is designed for MerCruiser\/Mercury GM-based sterndrive and inboard engines from 2000 and newer models, specifically those equipped with brass sea water pumps, covering displacements from 4.3L to 8.1L.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct replacement for Mercury\/Quicksilver part numbers 8M0150724, 862351T, and 862351.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eInstalls on brass sea water pump assemblies.\u003c\/li\u003e\n    \u003cli\u003eFeatures a durable steel housing with a protective black EDP coating.\u003c\/li\u003e\n    \u003cli\u003eDesigned for serpentine belt systems (6 grooves).\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\u003eSuperseded By\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\u003e862351T\u003c\/td\u003e\n          \u003ctd\u003e8M0150724\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Quicksilver\u003c\/td\u003e\n          \u003ctd\u003e862351\u003c\/td\u003e\n          \u003ctd\u003e8M0150724\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 Mercury MerCruiser engines: This pulley fits a wide range of sterndrive and inboard models manufactured from 2000 to present, as detailed in the compatibility list.\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\u003eDisplacement\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\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e4.3L MPI ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e4.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003eSupersedes 862351T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e4.3L MPI ALPHA\/BRAVO EC\u003c\/td\u003e\n\u003ctd\u003e4.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003eBrass sea water pump\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e4.3L CARB ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e4.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0L MPI ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0L MPI ALPHA\/BRAVO EC\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI HORIZON ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI MIE\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI HORIZON MIE\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI SKI\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L MPI MIE\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L MPI HORIZON MIE\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L MPI SKI\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L SKI EC\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L MPI TOWSPORT WITH GEN III\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e357 HORIZON INBOARD\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e357 HRZ 630A\/630V BOBTAIL RM\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e357 STROKER SCORPION\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e377 MAG MPI BRAVO\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e377 MAG MPI BRAVO EC\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e383 MAG STROKER\u003c\/td\u003e\n\u003ctd\u003e6.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e383 MAG STROKER BRAVO\u003c\/td\u003e\n\u003ctd\u003e6.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e383 MAG STROKER INBOARD\u003c\/td\u003e\n\u003ctd\u003e6.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e383 STROKER SCORPION\u003c\/td\u003e\n\u003ctd\u003e6.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e383 STROKER SCORPION BRAVO\u003c\/td\u003e\n\u003ctd\u003e6.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e385 Performance Tuned\u003c\/td\u003e\n\u003ctd\u003e6.3L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX 6.2L MPI BRAVO\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX 6.2L MPI HORIZON BRAVO\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX 6.2L MPI MIE\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX 6.2L MPI HORIZON MIE\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX 6.2L MPI SKI\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e6.2L MPI MIE\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e6.2L MPI HORIZON MIE\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e6.2L MPI MIE EC\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e496 MAG (Base Model)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e496 MAG (H.O. Model)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e496 MAG EC (Base Model)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e496 MAG EC (H.O. Model)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e496 H.O. BRAVO\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L INBOARD (Base)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L INBOARD (H.O.)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L INBOARD (Base) EC\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L INBOARD (H.O.) EC\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L INBOARD (Inline)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L INBOARD (V-Drive)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L TOWSPORT (Base)\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eBLACK SCORPION 350 MAG MPI\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eBLACK SCORPION MX 6.2L MPI\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 350\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 350 EC\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 377\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 377 HO EC\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e2000–Present\u003c\/td\u003e\n\u003ctd\u003e8M0150724\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\u003eSea Water Pump Pulley\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eBrass Sea Water Pump\u003c\/dd\u003e\n    \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eSteel with EDP Coating\u003c\/dd\u003e\n    \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e5.7 in (145 mm) Outside Diameter\u003c\/dd\u003e\n    \u003cdt\u003ePulley Type\u003c\/dt\u003e\n\u003cdd\u003eSerpentine Belt Pulley (6 Grooves)\u003c\/dd\u003e\n    \u003cdt\u003eShaft Bearing ID\u003c\/dt\u003e\n\u003cdd\u003e0.59 in (15 mm)\u003c\/dd\u003e\n    \u003cdt\u003eCorrosion Protection\u003c\/dt\u003e\n\u003cdd\u003eEDP (Electrophoretic Deposition) Painted\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 Sea Water Pump Pulley (Replaces 8M0150724\/862351T)\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 negative battery terminal.\u003c\/li\u003e\n    \u003cli\u003eLoosen the serpentine belt tensioner and carefully remove the belt from the sea water pump pulley.\u003c\/li\u003e\n    \u003cli\u003eRemove the bolts securing the old pulley to the sea water pump hub.\u003c\/li\u003e\n    \u003cli\u003eGently pull the old pulley off the shaft. Clean the pump mounting surface and shaft.\u003c\/li\u003e\n    \u003cli\u003eAlign the new pulley with the shaft keyway and slide it into place.\u003c\/li\u003e\n    \u003cli\u003eReinstall and tighten the mounting bolts to the manufacturer's specified torque.\u003c\/li\u003e\n    \u003cli\u003eRoute the serpentine belt correctly around all pulleys, then re-engage the tensioner.\u003c\/li\u003e\n    \u003cli\u003eDouble-check belt alignment on all pulleys.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery terminal.\u003c\/li\u003e\n    \u003cli\u003eStart the engine and briefly run it, checking for proper pulley rotation and belt tracking.\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 sea water pump pulley is failing?\u003c\/summary\u003e\u003cp\u003eCommon signs include a visible wobble while the engine is running, chirping or squealing noises from the belt area, rust streaks originating from the pulley, or visible cracks and damage on the pulley itself.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eDoes this pulley fit V-belt systems?\u003c\/summary\u003e\u003cp\u003eNo, this is a 6-groove serpentine belt pulley. It is not compatible with older V-belt systems.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat is EDP coating and why is it important?\u003c\/summary\u003e\u003cp\u003eElectrophoretic Deposition (EDP) is an advanced painting process that applies a protective, corrosion-resistant finish. This is essential for marine components like pulleys that are exposed to moisture and harsh conditions, preventing rust and extending part life.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eIs a special tool required for installation?\u003c\/summary\u003e\u003cp\u003eStandard mechanic's hand tools are generally sufficient. A serpentine belt tensioner tool can make it significantly easier to safely release tension and reinstall the belt.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat is the difference between this pulley and the OEM version?\u003c\/summary\u003e\u003cp\u003eThis aftermarket pulley is engineered to meet or exceed OEM specifications for fit, material quality, and performance. It is made from EDP-coated steel just like the original, offering a reliable, cost-effective alternative to the genuine Mercury part.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eCan a bad pulley cause the engine to overheat?\u003c\/summary\u003e\u003cp\u003eYes. If the pulley fails, it can cause the serpentine belt to slip or break, which stops turning the sea water pump. Without the pump circulating cooling water, the engine will quickly overheat.\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":50717884481851,"sku":"21TP003","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/862351_862351T_8M0150724_6543282f-03f9-4c0c-bfd7-6b741420dc68.png?v=1762937287"},{"product_id":"timing-belt-tensioner-kit-fits-volvo-penta-ohc-aq120-aq151-replaces-271713-463633","title":"Timing Belt Tensioner Kit – Fits Volvo Penta OHC AQ120-AQ151 (Replaces 271713, 463633)","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\u003eTiming Belt Tensioner Kit\u003c\/strong\u003e is engineered for Volvo Penta OHC 4-cylinder gasoline engines (110–146 HP) manufactured between 1966 and 1993, including models in the AQ120 to AQ151 series. It ensures proper timing belt tension, which is critical for engine performance and longevity.\u003c\/p\u003e\n  \u003cp\u003eThe kit serves as a direct replacement for multiple Volvo Penta part numbers, including 271713, 463377, 463633, and others, providing a reliable interchange solution for maintaining your marine engine.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned for direct OEM-replacement installation.\u003c\/li\u003e\n    \u003cli\u003eCompatible with 4-stroke gasoline engines.\u003c\/li\u003e\n    \u003cli\u003eIncludes both the tensioner and the timing belt for a complete service.\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\u003e271713\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e463377\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e463633\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e4636338\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e0463633\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e04636338\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e32298826\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 part is designed exclusively for specific Volvo Penta OHC engines. Please verify your model against the list 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\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003eOHC AQ120\u003c\/td\u003e\n          \u003ctd\u003e110–120\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1966–1980\u003c\/td\u003e\n          \u003ctd\u003e271713\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\u003eOHC AQ125\u003c\/td\u003e\n          \u003ctd\u003e117–120\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1981–1985\u003c\/td\u003e\n          \u003ctd\u003e271713\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\u003eOHC AQ131\u003c\/td\u003e\n          \u003ctd\u003e110–141\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1993\u003c\/td\u003e\n          \u003ctd\u003e271713\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\u003eOHC AQ140\u003c\/td\u003e\n          \u003ctd\u003e125\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1975–1979\u003c\/td\u003e\n          \u003ctd\u003e271713\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\u003eOHC AQ145\u003c\/td\u003e\n          \u003ctd\u003e138–141\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1979–1988\u003c\/td\u003e\n          \u003ctd\u003e271713\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\u003eOHC AQ151\u003c\/td\u003e\n          \u003ctd\u003e146\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1993\u003c\/td\u003e\n          \u003ctd\u003e271713\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\u003eTiming Belt Tensioner Kit\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n    \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n    \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1-year against manufacturing defects\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;\"\u003e1 x\u003c\/span\u003e Timing belt tensioner\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Timing belt\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 cold.\u003c\/li\u003e\n    \u003cli\u003eRemove any covers or components obstructing access to the timing belt area.\u003c\/li\u003e\n    \u003cli\u003eCarefully align the engine to Top Dead Center (TDC) according to your service manual. Mark the camshaft and crankshaft positions.\u003c\/li\u003e\n    \u003cli\u003eLoosen the old tensioner bolt to release tension on the belt.\u003c\/li\u003e\n    \u003cli\u003eRemove the old timing belt and tensioner.\u003c\/li\u003e\n    \u003cli\u003eInstall the new tensioner, but do not fully tighten it yet.\u003c\/li\u003e\n    \u003cli\u003eInstall the new timing belt, ensuring it is correctly routed and aligned with your marks.\u003c\/li\u003e\n    \u003cli\u003eApply tension to the belt with the new tensioner as specified in your engine's service manual. Tighten the tensioner bolt to the correct torque.\u003c\/li\u003e\n    \u003cli\u003eManually rotate the engine through two full revolutions and re-check timing marks and belt tension.\u003c\/li\u003e\n    \u003cli\u003eReinstall all previously removed components and reconnect the battery.\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 kit fits my engine?\u003c\/summary\u003e\n    \u003cp\u003eThis kit is specifically for Volvo Penta OHC 4-cylinder gasoline engines listed in the \"Engine \u0026amp; Model Compatibility\" table. Please cross-reference your engine model and year to ensure a match. Do not purchase if your model is not listed.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the signs of a failing timing belt tensioner?\u003c\/summary\u003e\n    \u003cp\u003eCommon symptoms include a ticking or rattling noise from the engine's timing cover, abnormal wear on the timing belt, or fluctuations in engine timing. Failure to replace a worn tensioner can lead to severe engine damage.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n    \u003cp\u003eIt is best practice to replace the timing belt and tensioner at the interval recommended in your Volvo Penta service manual. If an interval is not specified, a general guideline is every 5-7 years or after a set number of operating hours, whichever comes first.\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 two most essential components for the replacement: the timing belt and the tensioner. Depending on your engine's condition, you may also need to inspect related components like seals or water pumps, 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\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":50718260887867,"sku":"24TP002","price":48.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24TP002_1.jpg?v=1762958307"},{"product_id":"camshaft-gear-fits-volvo-penta-3-0l-5-7l-engines-117-150-hp-replaces-856239-855473-831972","title":"Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP (Replaces 856239, 855473, 831972)","description":"\u003csection\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\u003eCamshaft Gear\u003c\/strong\u003e is designed for Volvo Penta 4-cylinder 3.0L engines from 1979 to 1993, covering models from 117 to 150 HP. It ensures precise valve timing and is engineered from forged steel for durability and reliable performance.\u003c\/p\u003e\n\u003cp\u003eThis part directly replaces Volvo Penta OEM part numbers 856239, 855473, and 831972.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct OEM replacement fit.\u003c\/li\u003e\n\u003cli\u003eConstructed from high-strength forged steel.\u003c\/li\u003e\n\u003cli\u003eBacked by a 1-year warranty against manufacturing defects.\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\u003e856239\u003c\/td\u003e\n        \u003ctd\u003ePrimary Replacement\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e855473\u003c\/td\u003e\n        \u003ctd\u003eInterchangeable\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e831972\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\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 compatible with the following Volvo Penta engine 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\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\u003eAQ125A\u003c\/td\u003e\n\u003ctd\u003e117 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983–1984\u003c\/td\u003e\n\u003ctd\u003e856239\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\u003eAQ131 A, B, C, D\u003c\/td\u003e\n\u003ctd\u003e120 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1985–1993\u003c\/td\u003e\n\u003ctd\u003e856239\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\u003eAQ145B\u003c\/td\u003e\n\u003ctd\u003e138–139 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1988\u003c\/td\u003e\n\u003ctd\u003e856239\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\u003eAQ151 A, B, C\u003c\/td\u003e\n\u003ctd\u003e146–150 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1989–1993\u003c\/td\u003e\n\u003ctd\u003e856239\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\u003e230\u003c\/td\u003e\n\u003ctd\u003e120 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1989–1993\u003c\/td\u003e\n\u003ctd\u003e856239\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\u003e250\u003c\/td\u003e\n\u003ctd\u003e146 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1989–1993\u003c\/td\u003e\n\u003ctd\u003e856239\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\u003eCamshaft Gear \/ Timing Gear\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\u003eMetal (Forged Steel)\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e5.5 cm (height) × 15.5 cm (width) × 18.0 cm (length)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.51 kg (1.12 lbs)\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 Camshaft Gear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eAlways disconnect the battery before starting work on the engine.\u003c\/li\u003e\n\u003cli\u003eGain access to the front of the engine to remove the timing belt cover.\u003c\/li\u003e\n\u003cli\u003eCarefully align engine to Top Dead Center (TDC) and verify all timing marks before disassembly.\u003c\/li\u003e\n\u003cli\u003eRemove the old timing gear using the appropriate puller tool, if necessary.\u003c\/li\u003e\n\u003cli\u003eInstall the new camshaft gear, ensuring it is fully seated and the timing marks align perfectly.\u003c\/li\u003e\n\u003cli\u003eRe-tension the timing belt according to your engine's service manual specifications.\u003c\/li\u003e\n\u003cli\u003eReassemble all covers and components, then reconnect the battery. A professional mechanic should always verify the work.\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 camshaft gear is failing?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs of a worn or failing camshaft gear include engine rattling or a ticking noise coming from the timing cover area, rough idling, loss of power, and check engine lights related to camshaft position or timing. A visual inspection may reveal worn or broken teeth on the gear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this a \"square tooth\" or \"round tooth\" gear?\u003c\/summary\u003e\n  \u003cp\u003eThis is a square tooth timing gear, as specified for the listed Volvo Penta models. Please verify against your existing part before ordering, as modifications over the years can lead to variations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this fit my Volvo Penta 5.0L V8 engine?\u003c\/summary\u003e\n  \u003cp\u003eNo, this camshaft gear is specifically designed for the inline 4-cylinder 3.0L-class engines listed (AQ125, AQ131, AQ145, AQ151, etc.). It is not compatible with V6 or V8 engine architectures.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between this and the original OEM part?\u003c\/summary\u003e\n  \u003cp\u003eOur aftermarket gear is manufactured to meet or exceed original OEM specifications for fit, material, and performance. It is made from forged steel for high durability and serves as a direct-fit replacement for the original part numbers.\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 typically requires standard mechanic's tools, a torque wrench, and potentially a gear puller to remove the old gear. We strongly recommend consulting a professional and your engine's official service manual for the exact procedure and required tools.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n  \u003cp\u003eCamshaft gears do not have a fixed replacement interval like a timing belt. They are typically replaced when they show signs of wear, damage, or during a major engine overhaul. Always inspect the gear when replacing the timing belt.\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":50718265213243,"sku":"21TP002","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/856239855473831972_1.jpg?v=1762958503"},{"product_id":"power-steering-pump-pulley-fits-volvo-penta-3-0l-7-4l-omc-stern-drives-replaces-3853804-983839-983734-909981","title":"Aftermarket Power Steering Pump Pulley for Volvo Penta, OMC, Johnson\/Evinrude \u0026 MerCruiser Stern Drives","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket power steering pump pulley is designed for selected Volvo Penta, OMC, Johnson\/Evinrude, and MerCruiser stern-drive applications. It is listed for Volvo Penta and OMC\/Johnson\/Evinrude servo-pump applications and for MerCruiser power steering pump applications. Confirm the original pulley, engine configuration, and reference number before ordering.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta applications, this pulley is listed as a replacement for OEM part 3853804 and as an equivalent to Sierra 18-8964. Additional listed references include OMC\/Johnson\/Evinrude numbers 0983839, 983839, 0983734, 983734, 0909981, and 909981. For MerCruiser applications, the listed OEM references are 73873A1 and 73873, with aftermarket reference 18-8227.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower steering pump pulley for marine stern-drive systems.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement for the reference numbers listed below.\u003c\/li\u003e\n\u003cli\u003eSold as one pulley; no additional components are listed as included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\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;\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\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following references are listed for this pulley. A number appearing in the same product record does not by itself confirm fitment for every engine; verify the reference against your original part and application.\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 or Source\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eReference Type\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\u003e3853804\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e0983839 \/ 983839\u003c\/td\u003e\n        \u003ctd\u003eOEM references\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e0983734 \/ 983734\u003c\/td\u003e\n        \u003ctd\u003eOEM references\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e0909981 \/ 909981\u003c\/td\u003e\n        \u003ctd\u003eOEM references\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-8964\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference for 3853804\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e73873A1 \/ 73873\u003c\/td\u003e\n        \u003ctd\u003eOEM references\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n        \u003ctd\u003e18-8227\u003c\/td\u003e\n        \u003ctd\u003eMerCruiser application reference\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\u003eThis pulley is associated with the following marine stern-drive application groups:\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\u003eApplication\u003c\/th\u003e\n        \u003cth\u003eReference Numbers\u003c\/th\u003e\n        \u003cth\u003eFitment Notes\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\u003eStern-drive \/ out-drive power steering or servo-pump applications\u003c\/td\u003e\n        \u003ctd\u003e3853804; 18-8964\u003c\/td\u003e\n        \u003ctd\u003eThe Sierra catalog describes 18-8964 as a power steering pump pulley replacing 3853804 and notes many Volvo sterndrive applications.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003eCobra stern-drive \/ out-drive power steering pump applications\u003c\/td\u003e\n        \u003ctd\u003e0983839 \/ 983839; 0983734 \/ 983734; 0909981 \/ 909981\u003c\/td\u003e\n        \u003ctd\u003eConfirm the original pulley and reference number for the specific Cobra installation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003eMarine stern-drive \/ servo-pump applications\u003c\/td\u003e\n        \u003ctd\u003e0983839 \/ 983839; 0983734 \/ 983734; 0909981 \/ 909981\u003c\/td\u003e\n        \u003ctd\u003eVerify the application and original part number before installation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eStern-drive power steering pump applications\u003c\/td\u003e\n        \u003ctd\u003e73873A1 \/ 73873; 18-8227\u003c\/td\u003e\n        \u003ctd\u003eUse the MerCruiser reference and the original pulley for application confirmation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eSpecific model-year, horsepower, belt, shaft, and serial-number coverage is not established by the available product record. Do not rely on a general engine-size range alone to confirm fitment.\u003c\/p\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\u003ePower steering pump pulley\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMarine stern-drive or out-drive power steering\/servo-pump systems\u003c\/dd\u003e\n  \u003cdt\u003eProduct Configuration\u003c\/dt\u003e\n  \u003cdd\u003eSingle replacement pulley; not listed as a kit\u003c\/dd\u003e\n  \u003cdt\u003eVolvo Penta Reference\u003c\/dt\u003e\n  \u003cdd\u003e3853804\u003c\/dd\u003e\n  \u003cdt\u003eMerCruiser References\u003c\/dt\u003e\n  \u003cdd\u003e73873A1 and 73873\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket References\u003c\/dt\u003e\n  \u003cdd\u003e18-8964 and 18-8227\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eNot specified in the product record\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 Power steering pump pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo belt, pump, mounting hardware, key, or other accessories are listed as included.\u003c\/p\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 allow the engine to cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003eIdentify the existing power steering pump pulley and compare its shape, belt interface, mounting arrangement, and reference number with the replacement.\u003c\/li\u003e\n  \u003cli\u003eFollow the service instructions for your exact engine and stern-drive configuration.\u003c\/li\u003e\n  \u003cli\u003eRelease drive-belt tension using the procedure and tools specified by the engine manufacturer.\u003c\/li\u003e\n  \u003cli\u003eRemove the belt and existing pulley with the correct pulley-removal equipment; do not pry against the pump or damage the shaft.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump shaft, keyway, mounting surface, and belt for wear or damage before installing the replacement.\u003c\/li\u003e\n  \u003cli\u003eInstall the pulley in the correct orientation and ensure it is fully seated and aligned with the belt system.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer-specified fastener and pulley torque values for your exact application. No universal torque value is provided with this listing.\u003c\/li\u003e\n  \u003cli\u003eRoute and tension the belt according to the engine service manual.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery, start the engine only after all tools are clear, and check pulley alignment, belt tracking, steering operation, and abnormal noise.\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\u003eWhat does this product replace?\u003c\/summary\u003e\u003cp\u003eThe product record lists Volvo Penta 3853804, OMC\/Johnson\/Evinrude 0983839, 983839, 0983734, 983734, 0909981, and 909981, plus MerCruiser 73873A1 and 73873. Aftermarket references listed are Sierra 18-8964 and 18-8227. Verify the correct reference for your application before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill it fit every Volvo Penta, OMC, Johnson\/Evinrude, or MerCruiser stern drive?\u003c\/summary\u003e\u003cp\u003eNo universal fitment should be assumed. The product is associated with the application groups listed on this page, but exact fitment can vary by model, year, belt system, pump configuration, and serial number. Compare the original pulley and part number with the applicable service information.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a complete power steering pump?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for one power steering pump pulley only. The pump, belt, mounting hardware, key, and other components are not listed as included.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat tools are required for installation?\u003c\/summary\u003e\u003cp\u003eTools vary by engine and pump configuration. A basic socket and wrench set, a suitable belt-tension tool, and a pulley puller or installer may be required. Consult the service manual for your exact application.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the belt type and pulley dimensions provided?\u003c\/summary\u003e\u003cp\u003eThe available product record does not specify pulley dimensions, belt profile, or other detailed measurements. Compare the replacement with the original pulley before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a pulley problem?\u003c\/summary\u003e\u003cp\u003ePossible signs include pulley wobble, visible damage, belt misalignment, belt squeal, uneven belt wear, or abnormal noise from the pump-drive area. Inspect the pump, shaft, belt, and related components before replacing the pulley.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement pulley. The OEM and aftermarket numbers shown on this page are reference numbers used for identification and fitment checking; the product is not represented as a genuine OEM component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat warranty applies?\u003c\/summary\u003e\u003cp\u003eWarranty terms, if applicable, are governed by the seller’s current warranty and return policy. Review those terms before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original pulley, reference number, belt interface, and mounting arrangement before purchase.\u003c\/li\u003e\n  \u003cli\u003eKeep the Volvo Penta, OMC, Johnson\/Evinrude, and MerCruiser application groups separate when checking fitment; a reference number for one application does not automatically confirm another.\u003c\/li\u003e\n  \u003cli\u003eDo not use a pulley that is cracked, bent, misaligned, or incompatible with the belt system.\u003c\/li\u003e\n  \u003cli\u003eUse the service manual for your exact engine and stern-drive configuration for torque, belt tension, and installation procedures.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the correct pulley-removal or installation procedure is uncertain.\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\u003eMarine replacement parts selected for stern-drive and out-drive service applications.\u003c\/li\u003e\n  \u003cli\u003eReference-number support to help customers compare replacement components with their original parts.\u003c\/li\u003e\n  \u003cli\u003eProduct information presented with application-specific fitment guidance for safer ordering and installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718268490043,"sku":"21TP004","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/3853804MarinePulley_a191f8a6-6532-45f4-970b-2823f2161bc1.jpg?v=1762958633"},{"product_id":"tensioner-pulley-fits-volvo-penta-kad-kamd-series-replaces-3582324","title":"95 mm Tension Pulley for Volvo Penta KAD\/KAMD Engines – OEM 3582324","description":"\u003csection\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;\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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis 95 mm \u003cstrong\u003eTension Pulley\u003c\/strong\u003e is intended for selected Volvo Penta marine diesel engines in the KAD and KAMD families, as well as the TAMD42WJ-A. It is identified for use with Volvo Penta OEM part number \u003cstrong\u003e3582324\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe pulley is used in the engine belt-tensioning system. Confirm the engine model, pulley diameter, belt layout, and original part number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e95 mm tension pulley.\u003c\/li\u003e\n  \u003cli\u003eFor selected Volvo Penta KAD, KAMD, and TAMD42WJ-A applications.\u003c\/li\u003e\n  \u003cli\u003eReference OEM number: 3582324.\u003c\/li\u003e\n  \u003cli\u003eSold as one tension pulley.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eUse the references below when comparing your existing pulley and parts documentation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eReference Type\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 OEM\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eRECMAR reference\u003c\/td\u003e\n        \u003ctd\u003eREC3582324\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\u003eThe company fitment record lists the following Volvo Penta models. Catalog references further identify several model suffixes shown below. Model and suffix designations must be checked against the engine identification plate and the original pulley.\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\u003eEngine Model or Family\u003c\/th\u003e\n        \u003cth\u003eApplication Note\u003c\/th\u003e\n        \u003cth\u003eReference\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\u003eKAD32\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD32P-A\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed variant\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD43 \/ KAD43P-A\u003c\/td\u003e\n        \u003ctd\u003eListed application and catalog-listed variant\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD44 \/ KAD44P-B \/ KAD44P-C\u003c\/td\u003e\n        \u003ctd\u003eListed application and catalog-listed variants\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD300 \/ KAD300A\u003c\/td\u003e\n        \u003ctd\u003eListed application and catalog-listed variant\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAMD43\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAMD44 \/ KAMD44P \/ KAMD44P-A \/ KAMD44P-B\u003c\/td\u003e\n        \u003ctd\u003eListed application and catalog-listed variants\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAMD300 \/ KAMD300-A\u003c\/td\u003e\n        \u003ctd\u003eListed application and catalog-listed variant\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eTAMD42WJ-A\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n        \u003ctd\u003e3582324\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eTension pulley\u003c\/dd\u003e\n  \u003cdt\u003eDiameter\u003c\/dt\u003e\n  \u003cdd\u003e95 mm\u003c\/dd\u003e\n  \u003cdt\u003ePrimary OEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e3582324\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Volvo Penta KAD, KAMD, and TAMD42WJ-A engines\u003c\/dd\u003e\n  \u003cdt\u003eQuantity\u003c\/dt\u003e\n  \u003cdd\u003e1 pulley\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 95 mm tension pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eSwitch off the engine and allow it to cool completely before beginning work.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery according to the engine manufacturer's safety procedure.\u003c\/li\u003e\n  \u003cli\u003eFollow the engine service manual to relieve belt tension and remove the belt as required.\u003c\/li\u003e\n  \u003cli\u003eRemove the existing pulley and note its orientation and mounting arrangement.\u003c\/li\u003e\n  \u003cli\u003eCompare the replacement pulley with the removed part, including diameter and mounting details.\u003c\/li\u003e\n  \u003cli\u003eInstall the pulley using the engine manufacturer's specified fastener procedure and torque setting.\u003c\/li\u003e\n  \u003cli\u003eRoute the belt according to the correct engine belt diagram and restore the specified belt tension.\u003c\/li\u003e\n  \u003cli\u003eBefore operating the engine, check belt alignment and ensure the pulley rotates freely without interference.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eMaintenance \u0026amp; Troubleshooting\u003c\/h2\u003e\n\u003cp\u003eInspect the tension pulley whenever the belt is serviced. Replace it if the pulley is noisy, rough when rotated by hand, loose, visibly damaged, or showing abnormal belt wear. A squealing, grinding, or rumbling sound may also indicate a problem elsewhere in the belt-drive system, so inspect the complete belt path before replacing parts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the diameter of this tension pulley?\u003c\/summary\u003e\n  \u003cp\u003eThe listed pulley diameter is 95 mm.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhich OEM number does this pulley reference?\u003c\/summary\u003e\n  \u003cp\u003eThis pulley is listed against Volvo Penta OEM part number 3582324.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this a complete tensioner assembly?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for one tension pulley. It does not include a complete tensioner assembly, belt, or additional mounting hardware unless separately stated.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm compatibility?\u003c\/summary\u003e\n  \u003cp\u003eCheck the complete engine model and suffix, compare the original pulley diameter and mounting arrangement, and verify the original part number before ordering. If any of these details differ, consult the engine service documentation or a qualified marine technician.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes one pulley fit every KAD or KAMD engine?\u003c\/summary\u003e\n  \u003cp\u003eNo. Compatibility is limited to the applications listed on this page. KAD and KAMD family names alone are not sufficient for identification; verify the exact model and suffix.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways isolate the engine and follow the manufacturer's safety instructions before working around belts and rotating components.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on engine family names alone. Verify the exact model, suffix, pulley diameter, and original part number.\u003c\/li\u003e\n  \u003cli\u003eUse the engine manufacturer's specified torque values and belt-routing procedure.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if the belt system, tensioner, or mounting arrangement is difficult to access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Parts Support\u003c\/strong\u003e — We provide application-focused replacement parts for marine engines and drive systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment-Conscious Listings\u003c\/strong\u003e — Product references and model information are provided to help you compare the part before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical Maintenance Information\u003c\/strong\u003e — Clear installation and inspection guidance helps support safe, reliable servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723787079995,"sku":"21TP001","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/VolvoPenta3582324_belttensionpulley_1_e1150157-cac3-42fe-9c21-2437797f7285.jpg?v=1763031743"},{"product_id":"tension-pulley-fits-volvo-penta-kad-kamd-series-170-285-hp-replaces-3582324","title":"Aftermarket Idler Pulley for MerCruiser Stern Drive \u0026 Outdrive – Replaces 864625T, 8183812, 818380T and 859135","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 is an aftermarket \u003cstrong\u003eidler pulley\u003c\/strong\u003e for selected MerCruiser stern-drive and outdrive applications. It is supplied as a single pulley assembly for use with the engine belt system. The company product record identifies this part as an idler pulley and lists the MerCruiser reference numbers shown below.\u003c\/p\u003e\n  \u003cp\u003eUse the reference numbers, pulley appearance, mounting arrangement and your engine or drive documentation to confirm compatibility before ordering. Application information for this individual pulley is not specified in the company fitment field, so the vehicle or engine model alone should not be treated as confirmation.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eAftermarket idler pulley for marine belt systems.\u003c\/li\u003e\n    \u003cli\u003eIntended for MerCruiser stern-drive and outdrive equipment.\u003c\/li\u003e\n    \u003cli\u003eSupplied as one complete idler pulley assembly.\u003c\/li\u003e\n    \u003cli\u003eReference numbers include 864625T, 8183812, 818380T and 859135.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eThe following manufacturer reference numbers are listed for this pulley. Number listings are reference information; confirm the complete application and physical match before installation.\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 or Reference\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\u003e864625T\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e8183812\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e818380T\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e859135\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\u003eApplication Information\u003c\/h2\u003e\n  \u003cp\u003eThe company record categorizes this product for \u003cstrong\u003eMerCruiser Stern \/ Out Drive\u003c\/strong\u003e applications but does not provide a model, year, horsepower, stroke, shaft-length or serial-number range for the individual pulley.\u003c\/p\u003e\n  \u003cp\u003eSome related belt-and-pulley combination records reference MerCruiser 4.3L, 5.0L, 5.7L and other V6\/V8 applications, but those records describe separate combinations and are not transferred to this single-pulley listing. Verify the exact belt system and mounting configuration for your engine before purchase.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Application Information\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eItem\u003c\/th\u003e\n          \u003cth\u003eInformation\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eEquipment family\u003c\/td\u003e\n          \u003ctd\u003eMerCruiser stern drive and outdrive\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eComponent\u003c\/td\u003e\n          \u003ctd\u003eIdler pulley\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eModel, year, horsepower and serial range\u003c\/td\u003e\n          \u003ctd\u003eNot specified for this individual pulley\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCompatibility check\u003c\/td\u003e\n          \u003ctd\u003eMatch the reference number, original pulley and mounting arrangement before ordering\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 Specifications\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n    \u003cdd\u003eIdler pulley\u003c\/dd\u003e\n    \u003cdt\u003eProduct Format\u003c\/dt\u003e\n    \u003cdd\u003eSingle pulley assembly\u003c\/dd\u003e\n    \u003cdt\u003eApplication Category\u003c\/dt\u003e\n    \u003cdd\u003eMerCruiser stern drive \/ outdrive belt system\u003c\/dd\u003e\n    \u003cdt\u003eReference Numbers\u003c\/dt\u003e\n    \u003cdd\u003e864625T, 8183812, 818380T and 859135\u003c\/dd\u003e\n    \u003cdt\u003eBrand Status\u003c\/dt\u003e\n    \u003cdd\u003eAftermarket replacement\u003c\/dd\u003e\n    \u003cdt\u003eDimensions and Material\u003c\/dt\u003e\n    \u003cdd\u003eNot specified in the company product record\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 aftermarket idler pulley assembly\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eNo belt, additional pulley, mounting hardware or installation tool is listed as included with this individual pulley.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003cp\u003eInstallation procedures vary by engine and belt-system configuration. Always use the service information for your specific MerCruiser application and follow the manufacturer's torque requirements.\u003c\/p\u003e\n  \u003col\u003e\n    \u003cli\u003eSwitch off the engine, isolate the starting system and allow all components to cool.\u003c\/li\u003e\n    \u003cli\u003eConfirm that the replacement pulley matches the original pulley, reference number and mounting arrangement.\u003c\/li\u003e\n    \u003cli\u003eRemove any guards or covers necessary to access the belt system, following the engine service instructions.\u003c\/li\u003e\n    \u003cli\u003ePhotograph or note the belt routing before removing the belt.\u003c\/li\u003e\n    \u003cli\u003eRelease belt tension using the procedure specified for your engine.\u003c\/li\u003e\n    \u003cli\u003eRemove the belt from the pulley and remove the pulley mounting fastener.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement pulley in the same orientation as the original component.\u003c\/li\u003e\n    \u003cli\u003eReinstall and tighten the mounting fastener to the applicable manufacturer specification.\u003c\/li\u003e\n    \u003cli\u003eReinstall the belt according to the correct routing diagram and restore the specified belt tension.\u003c\/li\u003e\n    \u003cli\u003eRotate or inspect the belt system by hand, where permitted, to check alignment and free movement.\u003c\/li\u003e\n    \u003cli\u003eReinstall guards and covers before starting the engine.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, check for abnormal noise, belt wandering, vibration or pulley wobble.\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\u003eIs this a complete pulley or only a bearing?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is for one idler pulley assembly. A separate bearing-only replacement is not listed as part of this product.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this listing include a belt?\u003c\/summary\u003e\n    \u003cp\u003eNo. The individual product record identifies a single idler pulley. The belt-and-pulley combinations found in the catalog are separate products and are not included here.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich engines does this pulley fit?\u003c\/summary\u003e\n    \u003cp\u003eThe company record identifies the application category as MerCruiser stern drive and outdrive but does not specify a complete engine model, year, horsepower or serial-number range for this individual pulley. Confirm the reference number and physical configuration before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are common signs of an idler pulley problem?\u003c\/summary\u003e\n    \u003cp\u003ePossible signs include pulley wobble, rough or noisy rotation, belt tracking problems, abnormal belt wear and belt squeal. Inspect the complete belt system and follow the applicable service procedure before replacing parts.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use the reference number alone to confirm fitment?\u003c\/summary\u003e\n    \u003cp\u003eThe reference number is an important cross-reference, but it should be checked together with the original pulley, mounting arrangement and the specific engine or drive configuration.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is an aftermarket replacement pulley. MerCruiser reference numbers are provided only to help identify the corresponding application.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed and cost\u003c\/summary\u003e\n    \u003cp\u003eShipping options, delivery estimates and applicable charges are displayed at checkout and may vary by destination.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty and returns\u003c\/summary\u003e\n    \u003cp\u003eWarranty coverage and return eligibility are governed by the current store policy. Contact customer support with your order details if you need assistance.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eDo not rely on a general engine-family description alone. Confirm the exact reference number, pulley design and mounting arrangement.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the starting system and keep hands, clothing and tools away from moving belts and pulleys.\u003c\/li\u003e\n    \u003cli\u003eUse the correct belt-routing information and manufacturer torque specifications for your engine.\u003c\/li\u003e\n    \u003cli\u003eReplace or inspect related belt components if they show wear, contamination, misalignment or damage.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement component, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended when the correct service procedure or fitment cannot be confirmed.\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 replacement parts selected for dependable service in demanding marine environments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Shipping options are available for customers in many regions, with delivery details shown at checkout.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We aim to provide practical aftermarket replacement solutions at competitive prices.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723787112763,"sku":"23TP206","price":30.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23TP206_1.jpg?v=1763031744"},{"product_id":"tension-pulley-fits-volvo-penta-kad-kamd-tamd-170-300-hp-replaces-861563-877180","title":"Volvo Penta Tension Pulley – Fits KAD32P-A, KAD43\/KAD44\/KAD300, KAMD43\/KAMD44\/KAMD300 \u0026 TAMD42WJ-A","description":"\u003csection\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;\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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003etension pulley\u003c\/strong\u003e is listed for selected Volvo Penta marine diesel engine applications in the KAD, KAMD and TAMD series. It is a belt idler\/pulley component intended for the engine belt tensioning system.\u003c\/p\u003e\n\u003cp\u003eThe listed Volvo Penta reference numbers are \u003cstrong\u003e861563\u003c\/strong\u003e and \u003cstrong\u003e877180\u003c\/strong\u003e. The company catalog also lists \u003cstrong\u003e18563\u003c\/strong\u003e as a reference number for this product.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement tension pulley for selected Volvo Penta applications.\u003c\/li\u003e\n  \u003cli\u003eDesigned for use in the belt idler or tensioner assembly.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement component; not a Volvo Penta-branded OEM part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eCompare the reference numbers below with the number on your original pulley and your engine documentation before ordering.\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 or Reference\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\u003e861563\u003c\/td\u003e\n        \u003ctd\u003eReference number listed for this tension pulley\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e877180\u003c\/td\u003e\n        \u003ctd\u003eReference number listed for this tension pulley\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eReference\u003c\/td\u003e\n        \u003ctd\u003e18563\u003c\/td\u003e\n        \u003ctd\u003eAdditional number listed in the company catalog\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\u003eThe company fitment record lists the following Volvo Penta models. Model names, suffixes and engine identification should be checked carefully before purchase.\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\u003eEngine Model\u003c\/th\u003e\n        \u003cth\u003eListed Reference Numbers\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\u003eKAD32P-A\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD43\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD44\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAD300\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAMD43\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAMD44\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eKAMD300\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eTAMD42WJ-A\u003c\/td\u003e\n        \u003ctd\u003e861563, 877180, 18563\u003c\/td\u003e\n        \u003ctd\u003eListed application\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The company fitment record does not specify model years, horsepower, stroke, serial-number ranges or individual suffix coverage beyond the models listed above. Do not use a general horsepower or year range as a substitute for confirming the exact engine model.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eBelt idler \/ tension pulley\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Volvo Penta marine diesel belt tensioner assemblies\u003c\/dd\u003e\n  \u003cdt\u003eReference Numbers\u003c\/dt\u003e\n  \u003cdd\u003e861563, 877180, 18563\u003c\/dd\u003e\n  \u003cdt\u003eBrand Application\u003c\/dt\u003e\n  \u003cdd\u003eVolvo Penta Stern \/ Out Drive\u003c\/dd\u003e\n  \u003cdt\u003eProduct Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement\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 Tension Pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo additional belt, tensioner bracket, mounting hardware or other components are specified as included.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn off the engine, allow it to cool completely and follow the safety procedures in the engine service manual.\u003c\/li\u003e\n  \u003cli\u003eConfirm the replacement pulley and its reference number against the original part before disassembly.\u003c\/li\u003e\n  \u003cli\u003eRemove the drive belt and the existing pulley according to the manufacturer’s service procedure.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement pulley in the original belt tensioner or idler position.\u003c\/li\u003e\n  \u003cli\u003eReinstall and route the belt correctly, then tighten all fasteners to the applicable manufacturer specification.\u003c\/li\u003e\n  \u003cli\u003eBefore operating the engine, check belt alignment and pulley clearance. Start the engine only after confirming smooth, stable belt operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eProfessional installation is recommended when the correct belt-routing, fastener torque or tensioning procedure is not known.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this tension pulley will fit my engine?\u003c\/summary\u003e\n  \u003cp\u003eConfirm that your engine is one of the listed Volvo Penta models: KAD32P-A, KAD43, KAD44, KAD300, KAMD43, KAMD44, KAMD300 or TAMD42WJ-A. Also compare the original pulley and reference numbers 861563, 877180 or 18563. If your engine has a different suffix or the pulley differs in design, obtain confirmation before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing tension pulley?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs may include pulley noise, rough or restricted rotation, visible wobble, excessive play, belt misalignment or premature belt wear. Inspect the complete belt tensioner assembly and belt, because related components can produce similar symptoms.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs there a recommended replacement interval?\u003c\/summary\u003e\n  \u003cp\u003eNo fixed replacement interval is specified for this product. Inspect the pulley during routine belt service and replace it if the bearing or pulley shows noise, roughness, looseness, damage or misalignment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eMy original part is marked 861563. Is this the correct replacement?\u003c\/summary\u003e\n  \u003cp\u003e861563 is one of the reference numbers listed for this tension pulley. Confirm the complete engine model and compare the replacement pulley with the original part before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for an aftermarket replacement tension pulley. Volvo Penta reference numbers are provided for identification and application comparison only.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes the package include the belt or complete tensioner assembly?\u003c\/summary\u003e\n  \u003cp\u003eNo. The package contains one tension pulley only. A drive belt, bracket, tensioner assembly and mounting hardware are not specified as included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat if my engine model or part number is not listed?\u003c\/summary\u003e\n  \u003cp\u003eDo not assume compatibility from appearance or horsepower alone. Compare the exact engine model, original pulley and reference number with the information above, and contact support if you need application assistance.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the exact engine model and original pulley before ordering.\u003c\/li\u003e\n  \u003cli\u003eModel years, horsepower, stroke and serial-number coverage are not specified in the company fitment record and should not be inferred.\u003c\/li\u003e\n  \u003cli\u003eInspect the belt, tensioner, mounting hardware and pulley alignment during installation.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not a Volvo Penta-branded OEM component.\u003c\/li\u003e\n  \u003cli\u003eUse the applicable engine service manual for belt routing, torque values and operating checks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Parts Support\u003c\/strong\u003e — We provide replacement components for a range of marine engine and drive applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Reference numbers and model information are provided to help with parts identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Assistance\u003c\/strong\u003e — Contact support when your engine model, suffix or original part does not clearly match the listing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723787178299,"sku":"21TP008","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TP008_1.jpg?v=1763031747"},{"product_id":"idler-pulley-fits-volvo-penta-d4-d6-series-180-435hp-replaces-3847482","title":"Belt Idler Pulley for Volvo Penta D4-260, D4-300 and D6-350\/D6-370\/D6-400\/D6-435 Engines — OEM 3847482","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003ebelt idler pulley\u003c\/strong\u003e is designed for specified Volvo Penta stern-drive and outdrive applications using a metal roller belt. It is listed for D4-260 and D4-300 engines with serial numbers from \u003cstrong\u003e2004017298 and later\u003c\/strong\u003e, and D6-350, D6-370, D6-400 and D6-435 engines with serial numbers from \u003cstrong\u003e2006032252 and later\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis pulley corresponds to Volvo Penta OEM part number \u003cstrong\u003e3847482\u003c\/strong\u003e. Confirm both the engine model and the complete serial-number range before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement belt idler pulley for the listed Volvo Penta applications.\u003c\/li\u003e\n\u003cli\u003eIntended for use with the specified metal roller belt system.\u003c\/li\u003e\n\u003cli\u003eSingle pulley supplied; this is not a multi-piece 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 the reference below to compare the pulley with the part being replaced.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eOEM Part Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3847482\u003c\/td\u003e\n\u003c\/tr\u003e\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\u003eThe fitment below is limited to the listed models and serial-number conditions. Model family or horsepower alone is not sufficient to confirm compatibility.\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\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEngine Model\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eSerial Number\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD4-260\u003c\/td\u003e\n\u003ctd\u003e260\u003c\/td\u003e\n\u003ctd\u003eMetal roller belt\u003c\/td\u003e\n\u003ctd\u003e2004017298 and later\u003c\/td\u003e\n\u003ctd\u003e3847482\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD4-300\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003eMetal roller belt\u003c\/td\u003e\n\u003ctd\u003e2004017298 and later\u003c\/td\u003e\n\u003ctd\u003e3847482\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-350\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003eMetal roller belt\u003c\/td\u003e\n\u003ctd\u003e2006032252 and later\u003c\/td\u003e\n\u003ctd\u003e3847482\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-370\u003c\/td\u003e\n\u003ctd\u003e370\u003c\/td\u003e\n\u003ctd\u003eMetal roller belt\u003c\/td\u003e\n\u003ctd\u003e2006032252 and later\u003c\/td\u003e\n\u003ctd\u003e3847482\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-400\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003ctd\u003eMetal roller belt\u003c\/td\u003e\n\u003ctd\u003e2006032252 and later\u003c\/td\u003e\n\u003ctd\u003e3847482\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-435\u003c\/td\u003e\n\u003ctd\u003e435\u003c\/td\u003e\n\u003ctd\u003eMetal roller belt\u003c\/td\u003e\n\u003ctd\u003e2006032252 and later\u003c\/td\u003e\n\u003ctd\u003e3847482\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 Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eBelt idler pulley\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eVolvo Penta stern-drive and outdrive metal roller belt system\u003c\/dd\u003e\n\u003cdt\u003eOEM Part Number\u003c\/dt\u003e\n\u003cdd\u003e3847482\u003c\/dd\u003e\n\u003cdt\u003eQuantity\u003c\/dt\u003e\n\u003cdd\u003e1 pulley\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 Belt idler pulley\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 allow the engine to cool completely before beginning work.\u003c\/li\u003e\n\u003cli\u003eVerify the engine model, complete serial number and existing pulley against the compatibility information on this page.\u003c\/li\u003e\n\u003cli\u003eRelease belt tension according to the engine manufacturer's service procedure and remove the belt from the pulley.\u003c\/li\u003e\n\u003cli\u003eRemove the fastener securing the original pulley and inspect the mounting surface and fastener for damage or abnormal wear.\u003c\/li\u003e\n\u003cli\u003eInstall the replacement pulley in the same orientation as the original component.\u003c\/li\u003e\n\u003cli\u003eReinstall and correctly route the metal roller belt, then restore belt tension according to the engine manufacturer's specifications.\u003c\/li\u003e\n\u003cli\u003eBefore operating the engine, confirm that the belt tracks correctly and that the pulley rotates freely without interference.\u003c\/li\u003e\n\u003cli\u003eAfter starting the engine, check for abnormal noise, vibration or belt misalignment. Stop the engine immediately if any problem is observed.\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 confirm that this pulley fits my engine?\u003c\/summary\u003e\n\u003cp\u003eCheck the engine model and complete serial number. This listing is for Volvo Penta D4-260 and D4-300 engines from serial number 2004017298 onward, and D6-350, D6-370, D6-400 and D6-435 engines from serial number 2006032252 onward. Also compare the original pulley and OEM reference 3847482 before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the purpose of the idler pulley?\u003c\/summary\u003e\n\u003cp\u003eThe idler pulley guides and supports the belt system at its designated mounting position. Correct alignment and belt tension are required for proper operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are common signs of a worn pulley?\u003c\/summary\u003e\n\u003cp\u003ePossible signs include unusual squealing, chirping or grinding, pulley wobble, rough rotation, visible damage or abnormal belt wear. Inspect the pulley whenever the belt is serviced.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the package include the belt or mounting hardware?\u003c\/summary\u003e\n\u003cp\u003eNo. The package contains one belt idler pulley only. The belt, fasteners and other components are not listed as included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I install this pulley myself?\u003c\/summary\u003e\n\u003cp\u003eInstallation requires correct belt removal, routing and tension adjustment. Use the applicable Volvo Penta service procedure and the manufacturer's torque specifications. Professional installation is recommended when the correct procedure or specifications are unavailable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the exact engine model and serial number before purchase.\u003c\/li\u003e\n\u003cli\u003eDo not rely on horsepower or engine-family information alone to confirm fitment.\u003c\/li\u003e\n\u003cli\u003eCompare the original component and OEM reference 3847482 before installation.\u003c\/li\u003e\n\u003cli\u003eWork only on a stopped, cooled engine with the battery disconnected.\u003c\/li\u003e\n\u003cli\u003eUse the manufacturer's service information for belt tension, fastener torque and final inspection.\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\u003eMarine Parts Support\u003c\/strong\u003e — We provide replacement components for marine engine and stern-drive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Check model and serial-number conditions carefully before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical Replacement Solutions\u003c\/strong\u003e — Supplied components are clearly identified by application and reference number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723789308219,"sku":"21TP010","price":41.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TP010_1.jpg?v=1763031807"},{"product_id":"serpentine-belt-idler-pulley-fits-mercruiser-v6-v8-engines-replaces-865598-818382-8m6500024","title":"Serpentine Belt Idler Pulley for Select MerCruiser 4.3L–8.1L Engines – Replaces 865598, 818382 \u0026 8M6500024","description":"\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;\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\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis aftermarket \u003cstrong\u003eserpentine belt idler pulley\u003c\/strong\u003e is designed for select MerCruiser stern-drive and inboard engines using a serpentine belt system. The listed engine families include select 4.3L, 5.0L, 5.7L, 6.2L and 8.1L MerCruiser applications.\u003c\/p\u003e\n  \u003cp\u003eUse the reference numbers below to compare this pulley with the component currently installed on your engine. Application coverage can vary by engine configuration, so confirm the original pulley and belt-system arrangement before ordering.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eSingle replacement serpentine belt idler pulley.\u003c\/li\u003e\n    \u003cli\u003eFor select MerCruiser stern-drive and inboard engine applications.\u003c\/li\u003e\n    \u003cli\u003eFits applications using the corresponding serpentine belt pulley arrangement.\u003c\/li\u003e\n    \u003cli\u003eAftermarket replacement component; not manufactured by MerCruiser or Mercury.\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\u003eThe following manufacturer reference numbers are associated with this replacement pulley.\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\u003eReference 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\u003e865598\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e818382\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e8M6500024\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\u003eThis pulley is listed for select MerCruiser stern-drive and inboard engines in the following displacement families. The engine must use the matching serpentine belt system and pulley arrangement.\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\u003eEngine Family\u003c\/th\u003e\n          \u003cth\u003eApplication\u003c\/th\u003e\n          \u003cth\u003eReference Numbers\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\u003e4.3L V6\u003c\/td\u003e\n          \u003ctd\u003eSelect stern-drive and inboard engines with the applicable serpentine belt system\u003c\/td\u003e\n          \u003ctd\u003e865598, 818382, 8M6500024\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e5.0L V8\u003c\/td\u003e\n          \u003ctd\u003eSelect stern-drive and inboard engines with the applicable serpentine belt system\u003c\/td\u003e\n          \u003ctd\u003e865598, 818382, 8M6500024\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e5.7L V8\u003c\/td\u003e\n          \u003ctd\u003eSelect stern-drive and inboard engines with the applicable serpentine belt system\u003c\/td\u003e\n          \u003ctd\u003e865598, 818382, 8M6500024\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e6.2L V8\u003c\/td\u003e\n          \u003ctd\u003eSelect stern-drive and inboard engines with the applicable serpentine belt system\u003c\/td\u003e\n          \u003ctd\u003e865598, 818382, 8M6500024\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e8.1L V8\u003c\/td\u003e\n          \u003ctd\u003eSelect stern-drive and inboard engines with the applicable serpentine belt system\u003c\/td\u003e\n          \u003ctd\u003e865598, 818382, 8M6500024\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The displacement list is not a confirmation for every year, serial number, horsepower rating or engine configuration. Match the reference number, pulley design and mounting arrangement before purchase.\u003c\/p\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\u003eSerpentine belt idler pulley\u003c\/dd\u003e\n    \u003cdt\u003eProduct Configuration\u003c\/dt\u003e\n    \u003cdd\u003eSingle replacement pulley\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eSelect MerCruiser stern-drive and inboard engines\u003c\/dd\u003e\n    \u003cdt\u003eListed Engine Families\u003c\/dt\u003e\n    \u003cdd\u003e4.3L, 5.0L, 5.7L, 6.2L and 8.1L\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n    \u003cdd\u003eReplacement installation; use the engine manufacturer's service information for removal, alignment and fastener specifications\u003c\/dd\u003e\n    \u003cdt\u003eReference Numbers\u003c\/dt\u003e\n    \u003cdd\u003e865598, 818382 and 8M6500024\u003c\/dd\u003e\n    \u003cdt\u003eUPC\u003c\/dt\u003e\n    \u003cdd\u003e745061648302\u003c\/dd\u003e\n    \u003cdt\u003ePart Type\u003c\/dt\u003e\n    \u003cdd\u003eAftermarket replacement, not an OEM component\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\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Serpentine belt idler pulley\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eNo belt, mounting hardware or additional pulley is included unless specifically shown or stated in the order details.\u003c\/p\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 allow the engine to cool before beginning work.\u003c\/li\u003e\n    \u003cli\u003eIdentify the serpentine belt routing and release belt tension using the correct tool for your engine.\u003c\/li\u003e\n    \u003cli\u003eRemove the belt from the pulley and inspect the belt, adjacent pulleys and mounting hardware for wear or damage.\u003c\/li\u003e\n    \u003cli\u003eRemove the existing pulley while noting the order and orientation of any spacers or washers.\u003c\/li\u003e\n    \u003cli\u003eClean the mounting surface and install the replacement pulley in the same orientation as the original.\u003c\/li\u003e\n    \u003cli\u003eTighten the mounting fastener to the specification provided in the engine or boat manufacturer's service information. Do not use a generic torque value in place of the applicable service specification.\u003c\/li\u003e\n    \u003cli\u003eRoute the serpentine belt according to the engine's belt-routing diagram and confirm that it is fully seated in every pulley.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery, start the engine and check for correct belt tracking, unusual noise or pulley wobble before returning the boat to service.\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 confirm that this pulley fits my engine?\u003c\/summary\u003e\n    \u003cp\u003eFirst confirm that your engine is a MerCruiser stern-drive or inboard application in one of the listed 4.3L, 5.0L, 5.7L, 6.2L or 8.1L families. Then compare the pulley on your engine with the listed reference numbers—865598, 818382 or 8M6500024—and verify the mounting and belt arrangement. Displacement alone does not confirm fitment for every configuration.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a complete pulley or a pulley set?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is for one replacement serpentine belt idler pulley. It is not the two-pulley set associated with a separate combination listing.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are common signs of a worn idler pulley?\u003c\/summary\u003e\n    \u003cp\u003ePossible symptoms include belt squealing, grinding or chirping, visible pulley wobble, rough rotation, side-to-side play or abnormal belt wear. Inspect the belt system with the engine off and follow appropriate safety procedures.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShould I replace the belt at the same time?\u003c\/summary\u003e\n    \u003cp\u003eInspect the serpentine belt whenever the pulley is replaced. Replace the belt if it is cracked, glazed, frayed, contaminated or otherwise damaged, following the engine manufacturer's maintenance guidance.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this listing include installation hardware?\u003c\/summary\u003e\n    \u003cp\u003eNo additional hardware is specified as included. Reuse existing hardware only if it is serviceable and permitted by the applicable service instructions; otherwise obtain the correct replacement hardware separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is an aftermarket replacement pulley associated with MerCruiser reference numbers 865598, 818382 and 8M6500024. MerCruiser and Mercury are referenced only for application and part-number identification.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat installation torque should I use?\u003c\/summary\u003e\n    \u003cp\u003eUse the torque specification for your exact engine and pulley mounting arrangement from the applicable service manual. The correct value can vary by engine and hardware configuration.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide. Typical transit is 5–15 days, and 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. Returns are accepted within the standard return window when the item is unused and in its original condition. Contact support with your order details for assistance.\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\u003eConfirm the reference number, pulley design, mounting arrangement and belt routing before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not rely on engine displacement alone to confirm compatibility.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the battery and keep hands, clothing and tools away from moving components during testing.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended when the correct application or service specifications cannot be confirmed.\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 replacement parts selected for dependable service in real-world applications.\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 and practical replacement solutions for marine maintenance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723790094651,"sku":"23TP207","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/865598SerpentineFlatSmoothSurfaceIdler_a9f190cd-5256-4b8f-83dc-e0447a25b0e1.jpg?v=1763031845"},{"product_id":"idler-pulley-fits-mercury-marine-mercruiser-gm-v6-v8-engines-replaces-807757t","title":"Aftermarket Serpentine Belt Idler Pulley for MerCruiser and Volvo Penta GM V6 \u0026 V8 Engines – Replaces 807757T","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){\ntable.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 is an aftermarket \u003cstrong\u003eserpentine belt idler pulley\u003c\/strong\u003e for selected MerCruiser and Volvo Penta stern-drive or out-drive applications using GM V6 and V8 engines. The pulley is designed for use with a serpentine belt and is listed for 4.3L V6, 5.0L and 5.7L small-block V8, and 8.1L big-block V8 applications.\u003c\/p\u003e\n\u003cp\u003eThe composite pulley has a 3-inch outside diameter and is intended for a 13\/16-inch-wide serpentine belt. Confirm the original pulley dimensions, belt width, belt routing, engine configuration, and reference number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003eProduct Type: Serpentine belt idler pulley\u003c\/li\u003e\n    \u003cli\u003eApplication: MerCruiser and Volvo Penta stern-drive or out-drive systems\u003c\/li\u003e\n    \u003cli\u003eEngine Families: GM 4.3L V6, 5.0L and 5.7L small-block V8, and 8.1L big-block V8\u003c\/li\u003e\n    \u003cli\u003ePulley Material: Composite\u003c\/li\u003e\n    \u003cli\u003ePulley Outside Diameter: 3 inches\u003c\/li\u003e\n    \u003cli\u003eCompatible Belt Width: 13\/16 inch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following manufacturer and aftermarket references to help compare the replacement pulley with your original part. Reference numbers do not replace application and dimensional verification.\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 or Reference\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\u003e807757T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3860201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra Marine\u003c\/td\u003e\n\u003ctd\u003e18-6457\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-29801\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\u003eThe company catalog identifies this pulley for the following engine families and marine-drive applications. The catalog does not establish one universal year range or every model and serial-number combination, so verify the exact engine and drive configuration before purchase.\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\u003eEngine Family\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eApplication\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\u003e4.3L\u003c\/td\u003e\n\u003ctd\u003eGM V6\u003c\/td\u003e\n\u003ctd\u003eMerCruiser or Volvo Penta stern-drive\/out-drive\u003c\/td\u003e\n\u003ctd\u003eFor serpentine-belt systems using the listed pulley configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003eGM small-block V8\u003c\/td\u003e\n\u003ctd\u003eMerCruiser or Volvo Penta stern-drive\/out-drive\u003c\/td\u003e\n\u003ctd\u003eVerify pulley and belt dimensions before installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003eGM small-block V8\u003c\/td\u003e\n\u003ctd\u003eMerCruiser or Volvo Penta stern-drive\/out-drive\u003c\/td\u003e\n\u003ctd\u003eVerify pulley and belt dimensions before installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003eGM big-block V8\u003c\/td\u003e\n\u003ctd\u003eMerCruiser or Volvo Penta stern-drive\/out-drive\u003c\/td\u003e\n\u003ctd\u003eVerify engine configuration and original part reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eSerpentine belt idler pulley\u003c\/dd\u003e\n\u003cdt\u003eConstruction\u003c\/dt\u003e\n\u003cdd\u003eComposite pulley\u003c\/dd\u003e\n\u003cdt\u003eOutside Diameter\u003c\/dt\u003e\n\u003cdd\u003e3 inches\u003c\/dd\u003e\n\u003cdt\u003eCompatible Belt Width\u003c\/dt\u003e\n\u003cdd\u003e13\/16 inch\u003c\/dd\u003e\n\u003cdt\u003eBelt Type\u003c\/dt\u003e\n\u003cdd\u003eSerpentine\u003c\/dd\u003e\n\u003cdt\u003eInstallation Location\u003c\/dt\u003e\n\u003cdd\u003eEngine belt-drive system\u003c\/dd\u003e\n\u003cdt\u003eReplacement Reference\u003c\/dt\u003e\n\u003cdd\u003eMercury\/MerCruiser 807757T\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 ×\u003c\/span\u003e Composite serpentine belt idler pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMounting hardware, belt, tensioner, and other components are not included unless specifically shown or listed with the product.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n    \u003cli\u003eTurn off the engine, allow it to cool, and disconnect the battery before service.\u003c\/li\u003e\n    \u003cli\u003eRecord or photograph the serpentine belt routing before removing the belt.\u003c\/li\u003e\n    \u003cli\u003eUse the correct tool to release belt tension and remove the belt safely.\u003c\/li\u003e\n    \u003cli\u003eRemove the existing idler pulley using the appropriate socket and tools.\u003c\/li\u003e\n    \u003cli\u003eInspect the mounting surface, belt, tensioner, and neighboring pulleys for wear or damage.\u003c\/li\u003e\n    \u003cli\u003eCompare the replacement pulley with the original for diameter, belt width, mounting position, and alignment.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement pulley and tighten the fastener to the engine manufacturer's specified torque.\u003c\/li\u003e\n    \u003cli\u003eRoute the serpentine belt according to the original routing diagram and ensure every rib is correctly seated.\u003c\/li\u003e\n    \u003cli\u003eRestore belt tension, rotate the system by hand where appropriate, and check pulley alignment.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery, start the engine, and inspect the pulley and belt for smooth, quiet operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich engines is this idler pulley listed for?\u003c\/summary\u003e\u003cp\u003eThe company catalog lists 4.3L GM V6, 5.0L and 5.7L GM small-block V8, and 8.1L GM big-block V8 applications for MerCruiser and Volvo Penta stern-drive or out-drive systems. Always verify the exact engine and belt-drive arrangement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat reference numbers can I use for comparison?\u003c\/summary\u003e\u003cp\u003eListed references include Mercury\/MerCruiser 807757T, Volvo Penta 3860201, Sierra Marine 18-6457, and Mallory 9-29801. Reference-number comparison should be combined with dimensional and application checks.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat belt does this pulley use?\u003c\/summary\u003e\u003cp\u003eIt is intended for a serpentine belt approximately 13\/16 inch wide. Confirm the belt width and pulley profile on your engine before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of an idler pulley problem?\u003c\/summary\u003e\u003cp\u003eSquealing, rattling, rough rotation, pulley wobble, bearing noise, belt misalignment, or visible cracking can indicate that the pulley or another belt-drive component needs inspection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould the belt be replaced at the same time?\u003c\/summary\u003e\u003cp\u003eInspect the belt whenever the idler pulley is serviced. Replace the belt if it is cracked, glazed, frayed, contaminated, incorrectly sized, or otherwise worn.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement pulley intended for the listed applications and reference numbers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need special tools for installation?\u003c\/summary\u003e\u003cp\u003eInstallation normally requires standard mechanic's tools and a suitable serpentine-belt tension-release tool or long-handled ratchet, depending on the engine layout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCompare your original pulley with the listed references, 3-inch outside diameter, 13\/16-inch belt width, mounting arrangement, and belt routing. Also verify the engine family and stern-drive or out-drive configuration before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003eConfirm the engine family, drive configuration, original reference number, pulley diameter, belt width, and alignment before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not rely on engine displacement alone to establish fitment; variations may exist by model, drive, year, or serial number.\u003c\/li\u003e\n    \u003cli\u003eDo not operate the engine with a damaged, misaligned, or incorrectly routed serpentine belt.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended when the correct torque, belt routing, or service procedure is uncertain.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We provide aftermarket components for marine engine and drive-system service.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Product references and compatibility details are presented to help you compare the replacement with your original part.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment First\u003c\/strong\u003e — Always verify the engine, drive configuration, dimensions, and reference numbers before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723798778171,"sku":"21TP007","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TP007_1.jpg?v=1763032083"},{"product_id":"idler-pulley-fits-volvo-penta-d4-d6-replaces-21280913-3848896","title":"Volvo Penta D4\/D6 Belt Idler Pulley – Fits D4-260, D4-300, D6-350, D6-370, D6-400 \u0026 D6-435","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 belt idler pulley is designed for specified Volvo Penta marine applications. It is used in the compressor belt system to guide the belt and support correct belt alignment and tension within the pulley assembly.\u003c\/p\u003e\n  \u003cp\u003eThe company fitment information lists this pulley for Volvo Penta D4-260 and D4-300 engines up to serial number 2004017297, and D6-350, D6-370, D6-400 and D6-435 engines up to serial number 2006032252.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eProduct type: belt idler pulley.\u003c\/li\u003e\n    \u003cli\u003eApplication: Volvo Penta compressor belt system.\u003c\/li\u003e\n    \u003cli\u003eSingle pulley supplied; this is not a kit.\u003c\/li\u003e\n    \u003cli\u003eConfirm the engine model and serial-number limit before ordering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number References\u003c\/h2\u003e\n  \u003cp\u003eThe following Volvo Penta part numbers are listed as reference numbers for this pulley. Number references alone do not replace verification of the complete engine model and serial-number conditions.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n          \u003cth\u003eReference\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\u003e21280913\u003c\/td\u003e\n\u003ctd\u003eListed reference number\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3848896\u003c\/td\u003e\n\u003ctd\u003eListed reference number\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3809465\u003c\/td\u003e\n\u003ctd\u003eListed reference number\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3883786\u003c\/td\u003e\n\u003ctd\u003eListed reference number\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e21172053\u003c\/td\u003e\n\u003ctd\u003eListed reference number\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 Compatibility\u003c\/h2\u003e\n  \u003cp\u003eMatch both the engine model and the serial-number limit shown below. Do not rely on the D4 or D6 family name alone.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eEngine Model\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eSerial-Number Condition\u003c\/th\u003e\n          \u003cth\u003eReference 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\u003eD4-260\u003c\/td\u003e\n\u003ctd\u003e260\u003c\/td\u003e\n\u003ctd\u003eUp to serial number 2004017297\u003c\/td\u003e\n\u003ctd\u003e21280913\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD4-300\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003eUp to serial number 2004017297\u003c\/td\u003e\n\u003ctd\u003e21280913\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-350\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003eUp to serial number 2006032252\u003c\/td\u003e\n\u003ctd\u003e21280913\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-370\u003c\/td\u003e\n\u003ctd\u003e370\u003c\/td\u003e\n\u003ctd\u003eUp to serial number 2006032252\u003c\/td\u003e\n\u003ctd\u003e21280913\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-400\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003ctd\u003eUp to serial number 2006032252\u003c\/td\u003e\n\u003ctd\u003e21280913\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eD6-435\u003c\/td\u003e\n\u003ctd\u003e435\u003c\/td\u003e\n\u003ctd\u003eUp to serial number 2006032252\u003c\/td\u003e\n\u003ctd\u003e21280913\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 Specifications\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n    \u003cdd\u003eBelt idler pulley\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eVolvo Penta compressor belt system\u003c\/dd\u003e\n    \u003cdt\u003eCompatible Engine Family\u003c\/dt\u003e\n    \u003cdd\u003eSpecified Volvo Penta D4 and D6 applications\u003c\/dd\u003e\n    \u003cdt\u003eQuantity\u003c\/dt\u003e\n    \u003cdd\u003e1 pulley\u003c\/dd\u003e\n    \u003cdt\u003eListed Reference Numbers\u003c\/dt\u003e\n    \u003cdd\u003e21280913, 3848896, 3809465, 3883786 and 21172053\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 Belt idler pulley\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eNo additional belt, tensioner, mounting hardware or other components are identified in the company package information.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003cp\u003eInstallation should be performed with the engine stopped and the vessel's electrical system isolated as appropriate for the service procedure. Use the engine manufacturer's service information for removal, belt routing, fastener torque and belt-tension specifications.\u003c\/p\u003e\n  \u003col\u003e\n    \u003cli\u003eVerify the engine model and serial number before beginning work.\u003c\/li\u003e\n    \u003cli\u003eLocate the compressor belt system and identify the idler pulley.\u003c\/li\u003e\n    \u003cli\u003eRelease belt tension according to the applicable service procedure and remove the belt from the pulley.\u003c\/li\u003e\n    \u003cli\u003eRemove the existing pulley while noting its orientation and mounting arrangement.\u003c\/li\u003e\n    \u003cli\u003eInspect and clean the mounting surface before installation.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement pulley and tighten the fastener to the manufacturer's specified torque.\u003c\/li\u003e\n    \u003cli\u003eRoute the belt correctly around all pulleys.\u003c\/li\u003e\n    \u003cli\u003eRestore the specified belt tension and check pulley and belt alignment.\u003c\/li\u003e\n    \u003cli\u003eRun the engine only after reassembly is complete, then inspect for abnormal noise, wobble or belt movement.\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 confirm whether this pulley fits my D4 or D6 engine?\u003c\/summary\u003e\n    \u003cp\u003eCheck the complete engine model and serial number. The listed D4 applications are D4-260 and D4-300 up to serial number 2004017297. The listed D6 applications are D6-350, D6-370, D6-400 and D6-435 up to serial number 2006032252.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does this pulley do?\u003c\/summary\u003e\n    \u003cp\u003eIt is a belt idler pulley used in the compressor belt system. It guides the belt and supports proper belt alignment within the assembly.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are common signs that an idler pulley needs attention?\u003c\/summary\u003e\n    \u003cp\u003ePossible symptoms include unusual squealing or grinding, pulley wobble or play, rough rotation, belt tracking problems and accelerated or uneven belt wear. Inspect the complete belt system before replacing individual components.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this listing include a belt or tensioner?\u003c\/summary\u003e\n    \u003cp\u003eNo. The package contains one belt idler pulley. A belt, separate tensioner, mounting hardware and other components are not listed as included.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use it on an engine with a higher serial number?\u003c\/summary\u003e\n    \u003cp\u003eThe listed fitment stops at the stated serial-number limits. If your engine serial number is higher, verify the correct part through the engine's service or parts information before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs installation included?\u003c\/summary\u003e\n    \u003cp\u003eInstallation is not included. Follow the applicable Volvo Penta service procedure or have the work performed by a qualified marine technician.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the engine model, serial number, existing pulley and belt routing before purchase and installation.\u003c\/li\u003e\n    \u003cli\u003eDo not use the part-number list by itself to confirm fitment; the model and serial-number conditions must also match.\u003c\/li\u003e\n    \u003cli\u003eDo not operate the engine with a damaged, misaligned or improperly tensioned belt.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended where the correct belt procedure or torque specification is not available.\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\u003eMarine Parts Support\u003c\/strong\u003e — We provide replacement components for marine service and maintenance applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Product information is organized around engine models, serial-number conditions and reference numbers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWorldwide Fulfillment\u003c\/strong\u003e — Shipping options and delivery estimates are shown at checkout based on destination and availability.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723808084283,"sku":"21TP011","price":46.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TP011_1.jpg?v=1763032305"},{"product_id":"belt-tensioner-fits-volvo-penta-4-3l-5-0l-5-7l-8-1l-replaces-3885250-3587858","title":"Serpentine Belt Tensioner for Volvo Penta 4.3L, 5.0L, 5.7L and 8.1L V8 Engines – Replaces 3885250, 3587858, 3587859, 3861010","description":"\u003csection\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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eserpentine belt tensioner\u003c\/strong\u003e is designed for Volvo Penta marine applications using 4.3L, 5.0L, 5.7L and 8.1L V8 engines. It is supplied as a single replacement tensioner for the belt-drive system.\u003c\/p\u003e\n\u003cp\u003eUse the original component and the engine model information to verify compatibility before ordering. The applicable Volvo Penta reference numbers are \u003cstrong\u003e3885250, 3587858, 3587859 and 3861010\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement belt tensioner for selected Volvo Penta stern-drive and out-drive applications.\u003c\/li\u003e\n  \u003cli\u003eDesigned to maintain proper serpentine-belt tension during engine operation.\u003c\/li\u003e\n  \u003cli\u003eSingle-component replacement; belt and mounting hardware are not included unless specifically shown or stated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese are the manufacturer reference numbers listed for this replacement tensioner. Confirm the number on your original part before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eReference Part Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3885250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3587858\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3587859\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3861010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company fitment record identifies this tensioner for Volvo Penta 4.3L, 5.0L, 5.7L and 8.1L V8 applications. Available catalog information groups the reference numbers with the following model families:\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEngine family or model series\u003c\/th\u003e\n\u003cth\u003eEngine size\u003c\/th\u003e\n\u003cth\u003eReference numbers\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3 GL, 4.3 GI, 4.3 GXI, 4.3 OSI\u003c\/td\u003e\n\u003ctd\u003e4.3L V8\u003c\/td\u003e\n\u003ctd\u003e3885250, 3587858\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0 GI, 5.0 GXI, 5.0 OSI\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e3885250, 3587858\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7 GI, 5.7 GXI, 5.7 OSI\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e3885250, 3587858\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e8.1 GI, 8.1 GXI, 8.1 IPSCE, 8.1 OSI\u003c\/td\u003e\n\u003ctd\u003e8.1L V8\u003c\/td\u003e\n\u003ctd\u003e3885250, 3587859, 3861010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eModel suffixes, production configurations and serial-number ranges can affect fitment. If your exact model or reference number is not listed, compare the original tensioner and consult the engine service information before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct type\u003c\/dt\u003e\n\u003cdd\u003eSerpentine belt tensioner\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eVolvo Penta stern-drive and out-drive marine engines\u003c\/dd\u003e\n  \u003cdt\u003eEngine families\u003c\/dt\u003e\n\u003cdd\u003e4.3L, 5.0L, 5.7L and 8.1L V8\u003c\/dd\u003e\n  \u003cdt\u003eReplacement references\u003c\/dt\u003e\n\u003cdd\u003e3885250, 3587858, 3587859 and 3861010\u003c\/dd\u003e\n  \u003cdt\u003eQuantity\u003c\/dt\u003e\n\u003cdd\u003eOne tensioner\u003c\/dd\u003e\n  \u003cdt\u003eProduct status\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement; not an OEM-branded component\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 Serpentine belt tensioner\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBelts, pulleys, fasteners and other accessories are not included unless shown in the product photos or separately stated.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the boat's battery and allow the engine to cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003eLocate the serpentine belt and tensioner assembly in the engine bay.\u003c\/li\u003e\n  \u003cli\u003eUse the correct serpentine-belt tool or breaker bar to release belt tension, then remove the belt from the pulleys.\u003c\/li\u003e\n  \u003cli\u003eRemove the existing tensioner and retain any original spacers or washers that are required for installation.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement tensioner in the original position and tighten the mounting fasteners to the torque specified in the engine service information.\u003c\/li\u003e\n  \u003cli\u003eRoute the belt according to the belt-routing diagram for the specific engine.\u003c\/li\u003e\n  \u003cli\u003eRelease the tensioner carefully and verify that the belt is fully seated in every pulley groove.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery, start the engine and check for correct belt tracking and abnormal noise.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a failing belt tensioner?\u003c\/summary\u003e\u003cp\u003eSquealing, rattling or grinding from the belt-drive area, irregular tensioner-arm movement, belt misalignment and uneven belt wear can indicate a worn tensioner or another belt-drive problem. Inspect the complete system before replacing one component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this listing include the serpentine belt?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for one belt tensioner only. The serpentine belt and other installation parts are not included unless specifically stated.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every Volvo Penta V8 engine?\u003c\/summary\u003e\u003cp\u003eNo. It is intended for the listed 4.3L, 5.0L, 5.7L and 8.1L V8 applications and reference numbers. Verify the exact engine model, configuration and original part number before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement, not an OEM-branded Volvo Penta component. It is listed as a replacement for the reference numbers shown above.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat should I do if my part number is not listed?\u003c\/summary\u003e\u003cp\u003eDo not assume compatibility from engine displacement alone. Compare the original tensioner, mounting arrangement and reference number with the product information, or consult a qualified marine technician.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the tensioner be inspected?\u003c\/summary\u003e\u003cp\u003eInspect the tensioner whenever the serpentine belt is serviced and during routine engine maintenance. Replace it if the pulley is noisy, the arm moves unevenly, or the belt does not track correctly.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDisconnect the battery before working around the engine belt system.\u003c\/li\u003e\n  \u003cli\u003eNever work on a running engine or a hot belt-drive assembly.\u003c\/li\u003e\n  \u003cli\u003eVerify the reference number, engine model and component appearance before purchase.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the correct belt-routing or torque information is unavailable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine replacement parts selected for common service and repair applications.\u003c\/li\u003e\n  \u003cli\u003eProduct information organized around manufacturer reference numbers and engine fitment.\u003c\/li\u003e\n  \u003cli\u003eSupport available to help verify compatibility before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723970908475,"sku":"23TP441","price":68.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23TP441_1.jpg?v=1763038814"},{"product_id":"power-steering-pump-pulley-fits-mercruiser-4-3l-8-2l-replaces-861578-8m0150723","title":"Aftermarket Power Steering Pump Pulley for MerCruiser Sterndrives – Serpentine Belt, Replaces 861578","description":"\u003csection\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;\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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket power steering pump pulley is designed for MerCruiser stern-drive and inboard\/outboard applications using a serpentine belt. It is listed for the MerCruiser power steering pump and is intended as a replacement for the original pulley identified by reference number 861578.\u003c\/p\u003e\n\u003cp\u003eThe Sierra catalog identifies aftermarket number 18-8297 as a power steering pump pulley for sterndrives with a serpentine belt and lists it as replacing 861578. Company product records also list MerCruiser reference numbers 8M0150723 and 8M0146318.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePower steering pump pulley for MerCruiser sterndrives.\u003c\/li\u003e\n  \u003cli\u003eFor serpentine-belt systems.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eVerify the pulley style and reference number against the original part before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references to compare the replacement pulley with the part installed on your engine.\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 or Source\u003c\/th\u003e\n        \u003cth\u003eReference\u003c\/th\u003e\n        \u003cth\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-8297\u003c\/td\u003e\n        \u003ctd\u003ePower steering pump pulley\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e861578\u003c\/td\u003e\n        \u003ctd\u003eReplacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0150723\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0146318\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatibility Information\u003c\/h2\u003e\n\u003cp\u003eThis pulley is intended for MerCruiser stern-drive and inboard\/outboard applications equipped with a serpentine belt and a compatible power steering pump. Engine family, model year, serial number, accessory-drive configuration, and pulley design can affect fitment.\u003c\/p\u003e\n\u003cp\u003eDo not rely on engine displacement alone to confirm compatibility. Compare the existing pulley, belt type, mounting arrangement, and reference number before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Compatibility Information\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eApplication\u003c\/th\u003e\n        \u003cth\u003eBelt Type\u003c\/th\u003e\n        \u003cth\u003eComponent\u003c\/th\u003e\n        \u003cth\u003eReference\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser stern-drive \/ inboard-outboard\u003c\/td\u003e\n        \u003ctd\u003eSerpentine belt\u003c\/td\u003e\n        \u003ctd\u003ePower steering pump pulley\u003c\/td\u003e\n        \u003ctd\u003e861578\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\u003ePower steering pump pulley\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMerCruiser stern-drive and inboard\/outboard systems\u003c\/dd\u003e\n  \u003cdt\u003eBelt Configuration\u003c\/dt\u003e\n  \u003cdd\u003eSerpentine belt\u003c\/dd\u003e\n  \u003cdt\u003eProduct Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Reference\u003c\/dt\u003e\n  \u003cdd\u003e861578\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 Aftermarket power steering pump pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine to cool completely.\u003c\/li\u003e\n  \u003cli\u003eRelease the serpentine-belt tension and remove the belt from the pulley, following the routing information for your engine.\u003c\/li\u003e\n  \u003cli\u003eRemove the original power steering pump pulley using the appropriate service tools. A pulley puller and installer may be required for press-fit designs.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump shaft, pulley mounting surface, and belt for wear or damage before installation.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement pulley using the correct procedure for the pump and pulley design. Do not hammer the pulley onto the shaft.\u003c\/li\u003e\n  \u003cli\u003eConfirm that the pulley is fully seated and aligned with the other belt-driven components.\u003c\/li\u003e\n  \u003cli\u003eReinstall the serpentine belt, reconnect the battery, and check belt tracking and pulley operation before returning the boat 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 confirm that this pulley fits?\u003c\/summary\u003e\n  \u003cp\u003eFirst, confirm that your application uses a serpentine belt and a compatible MerCruiser power steering pump. Then compare the original pulley and its reference number with 861578 and the other references listed above. Engine displacement by itself is not sufficient to confirm fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this pulley for a V-belt system?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for the serpentine-belt power steering pump pulley. A V-belt pulley has a different belt profile and should not be substituted without confirming the complete accessory-drive configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a damaged pulley?\u003c\/summary\u003e\n  \u003cp\u003ePossible signs include pulley wobble, belt misalignment, belt squealing or chirping, unusual belt wear, or visible damage to the pulley. Inspect the pump shaft and belt system as well, since a damaged pulley may be caused by another belt-drive problem.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need special tools for installation?\u003c\/summary\u003e\n  \u003cp\u003eMany power steering pump pulleys are press-fit and require a dedicated pulley puller and installer. Use the service procedure and torque specifications applicable to your engine and pump. Do not force the pulley into place with a hammer or improvised tools.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse my old serpentine belt?\u003c\/summary\u003e\n  \u003cp\u003eInspect the belt for cracking, fraying, glazing, contamination, stretching, or other damage. Replace it if its condition is questionable, and confirm that the belt routing and tensioner are correct after installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat happens if the pulley is misaligned?\u003c\/summary\u003e\n  \u003cp\u003eMisalignment can cause belt noise, accelerated belt wear, belt derailment, or loss of operation from belt-driven accessories. Make sure the pulley is fully seated and runs in the same plane as the other pulleys.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement power steering pump pulley. The listed reference numbers are provided for application and comparison purposes.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm the serpentine-belt configuration, pulley profile, mounting arrangement, and reference number before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not install this pulley on a V-belt system unless the complete application has been specifically verified.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and keep hands, clothing, and tools away from moving belt components during testing.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when pulley removal or installation requires specialized tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine replacement parts selected for common stern-drive and inboard\/outboard service applications.\u003c\/li\u003e\n  \u003cli\u003eClear reference information to help compare replacement components with the original part.\u003c\/li\u003e\n  \u003cli\u003eSupport for routine marine maintenance and repair needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723971170619,"sku":"21TP005","price":37.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TP005_1.webp?v=1763038819"}],"url":"https:\/\/seasierra.com\/collections\/tensioner-pulley.oembed","provider":"SeaSierra","version":"1.0","type":"link"}