{"product_id":"trim-cylinder-end-cap-with-seals-fits-mercruiser-alpha-i-gen-ii-bravo-replaces-806191t-18-2373","title":"Trim Cylinder End Cap with Seals – Fits MerCruiser Alpha I Gen II Bravo (Replaces 806191T, 18-2373)","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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis Trim Cylinder End Cap with Seals is a direct replacement for MerCruiser Alpha I Gen II and Bravo sterndrive systems. Designed to restore proper function to your trim ram assembly, this end cap ensures reliable hydraulic operation across multiple MerCruiser drive generations.\u003c\/p\u003e\n\u003cp\u003eThis component replaces OEM part numbers 806191T, 14698, 14698T, 14698T10, 8M0110717, 8M0115362, 8M0118340, 98-8M0118340, and aftermarket equivalent 18-2373.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeals included for complete installation\u003c\/li\u003e\n  \u003cli\u003eDirect fit for MerCruiser Alpha Generation 1, Alpha Generation 2, and Bravo drives\u003c\/li\u003e\n  \u003cli\u003eRestores trim cylinder hydraulic integrity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e806191T\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e14698\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e14698T\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e14698T10\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0110717\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0115362\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0118340\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e98-8M0118340\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAftermarket\u003c\/td\u003e\n        \u003ctd\u003e18-2373\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eAlpha Generation 1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eAlpha Generation 2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eBravo\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\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eTrim Cylinder End Cap\u003c\/dd\u003e\n  \u003cdt\u003eFitment\u003c\/dt\u003e\n  \u003cdd\u003eMerCruiser R\/MR\/Alpha I, Gen II, Bravo\u003c\/dd\u003e\n  \u003cdt\u003eSeals\u003c\/dt\u003e\n  \u003cdd\u003eIncluded\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e806191T\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eTrim Cylinder End Cap with Seals\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect battery and relieve hydraulic pressure from the trim system before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the existing trim cylinder end cap by unbolting or unscrewing per your drive service manual.\u003c\/li\u003e\n  \u003cli\u003eInspect the cylinder bore for scoring, corrosion, or debris; clean thoroughly if necessary.\u003c\/li\u003e\n  \u003cli\u003eInstall the new seals onto the end cap, ensuring proper orientation and seating in the grooves.\u003c\/li\u003e\n  \u003cli\u003eApply a thin layer of compatible hydraulic fluid or assembly lubricant to the seals.\u003c\/li\u003e\n  \u003cli\u003eCarefully thread or bolt the new end cap into position, avoiding cross-threading.\u003c\/li\u003e\n  \u003cli\u003eTorque fasteners to manufacturer specifications using a calibrated torque wrench.\u003c\/li\u003e\n  \u003cli\u003eRefill the trim system with the correct hydraulic fluid and bleed air from the lines.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery and test trim operation through full range to confirm proper seal and function.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhich MerCruiser drives does this end cap fit?\u003c\/summary\u003e\n  \u003cp\u003eThis end cap fits MerCruiser Alpha Generation 1, Alpha Generation 2, and Bravo series drives. Verify your drive model and OEM part number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eAre the seals already installed on the end cap?\u003c\/summary\u003e\n  \u003cp\u003eSeals are included with this end cap but may require installation during assembly. Check the packaging and install per your service manual instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the old seals if they look fine?\u003c\/summary\u003e\n  \u003cp\u003eNo. Always replace seals when servicing hydraulic components to prevent future leaks and ensure proper system pressure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are signs that my trim cylinder end cap needs replacement?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include hydraulic fluid leaks around the trim ram, slow or erratic trim response, and loss of trim position under load. Inspect for visible cracks or seal deterioration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to bleed the trim system after installation?\u003c\/summary\u003e\n  \u003cp\u003eYes. After replacing the end cap and refilling hydraulic fluid, bleed air from the system by cycling the trim through its full range multiple times.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat type of hydraulic fluid should I use?\u003c\/summary\u003e\n  \u003cp\u003eUse MerCruiser Power Trim and Steering Fluid or an equivalent high-quality automatic transmission fluid (ATF) as specified in your owner's manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\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","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025604870459,"sku":"22EC004","price":53.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/A4687070be4b64ea6888c97c595510b41j.webp?v=1772931758","url":"https:\/\/seasierra.com\/products\/trim-cylinder-end-cap-with-seals-fits-mercruiser-alpha-i-gen-ii-bravo-replaces-806191t-18-2373","provider":"SeaSierra","version":"1.0","type":"link"}