{"product_id":"power-trim-tilt-cylinder-end-cap-with-seals-fits-yamaha-60-90-hp-replaces-6h1-43821-11-00-6h1-43821-10-00","title":"Power Trim\/Tilt Cylinder End Cap with Seals – Fits Yamaha 60-90 HP (Replaces 6H1-43821-11-00, 6H1-43821-10-00)","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 is a replacement \u003cstrong\u003ePower Trim\/Tilt Cylinder End Cap with Seals\u003c\/strong\u003e designed to fit a range of Yamaha outboard motors from 60 HP to 90 HP, including various 2-stroke and 4-stroke models in the 60TLR, 70TLR, and 90TLR series from approximately 2000 to 2004. Constructed from high-strength, hard-anodized aluminum, it provides a durable solution for repairing leaking or damaged hydraulic trim cylinders.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Yamaha OEM part numbers 6H1-43821-11-00, 6H1-43821-11, 6H1-43821-10-00, and 6H1-43821-10.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003eEngineered for a direct screw-in cylinder installation.\u003c\/li\u003e\n    \u003cli\u003eFeatures a Military Grade Type 3 Hard Coating for superior corrosion resistance and durability in marine environments.\u003c\/li\u003e\n    \u003cli\u003eComes as a complete assembly with all necessary seals for a comprehensive repair.\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-10-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-10\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60TLR\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003eBase model\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60TLRA\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2002\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60TLRB\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2003\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60TLRC\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2004\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60TLRNC\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2004\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e60TLRZ\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2001\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eC60TLRY\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2000\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eC60TLRZ\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2001\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eP60TLHQ\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e1992\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e70TLR\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003eBase model\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e70TLRC\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e2004\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e70TLRNC\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e2004\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e70TLRY\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e2000\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e70TLRZ\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e2001\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90TLR\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003eBase model\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90TJRZ\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e2001\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90TLRA\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e2002\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90TLRB\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e2003\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90TLRC\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e2004\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e90TLRY\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e2000\u003c\/td\u003e\n        \u003ctd\u003e6H1-43821-11-00\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\u003ePower Trim\/Tilt Cylinder End Cap with Seals\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eScrew-in cylinder end cap assembly\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement for Yamaha trim\/tilt hydraulic cylinders\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eAircraft Grade Aluminum with Hard Anodized Coating\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\/Metallic\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e74.8 g (2.64 ounces)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eScrew-in hydraulic end cap\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eMilitary Grade Type 3 Hard Coating for corrosion resistance and durability\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 Power Trim\/Tilt Cylinder End Cap Assembly (6H1-43821-11-00\/6H1-43821-10-00)\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x Included seal kit for a complete installation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eLower the outboard motor completely and engage the trailering bracket or tilt lock for safety.\u003c\/li\u003e\n  \u003cli\u003ePlace a drain pan under the trim unit to catch any hydraulic fluid.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean the area around the cylinder end cap to prevent contamination.\u003c\/li\u003e\n  \u003cli\u003eCarefully relieve any residual hydraulic pressure according to your service manual.\u003c\/li\u003e\n  \u003cli\u003eUsing a compatible pin wrench tool, unscrew and remove the old cylinder end cap.\u003c\/li\u003e\n  \u003cli\u003eRemove the old cap and its seals from the piston rod, noting their orientation.\u003c\/li\u003e\n  \u003cli\u003eClean the cylinder bore and threads, inspecting for any scoring or damage.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the new seals with fresh hydraulic fluid and install them onto the new end cap.\u003c\/li\u003e\n  \u003cli\u003eCarefully thread the new end cap assembly into the cylinder and tighten to the manufacturer's recommended torque specification.\u003c\/li\u003e\n  \u003cli\u003eRefill and bleed the hydraulic system as outlined in your outboard's service manual to remove all air.\u003c\/li\u003e\n  \u003cli\u003eOperate the trim\/tilt system multiple times and inspect for any leaks before returning to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow can I confirm this end cap fits my specific Yamaha model?\u003c\/summary\u003e\n  \u003cp\u003eThe surest way is to match your existing part number to one of the direct replacements: 6H1-43821-11-00, 6H1-43821-11, 6H1-43821-10-00, or 6H1-43821-10. Additionally, check your exact engine model and year against our compatibility table.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common symptoms of a failing cylinder end cap?\u003c\/summary\u003e\n  \u003cp\u003eThe most common signs are visible hydraulic fluid leaks around the end of the trim cylinder, a slow or \"spongy\" trim\/tilt response, or the motor slowly \"drifting\" down from a tilted position. These indicate a failed seal.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs a special tool required for installation?\u003c\/summary\u003e\n  \u003cp\u003eYes, a pin wrench tool is required to properly engage the holes on the cap for removal and installation. Using improper tools like a punch and hammer can damage the cap or cylinder and is not recommended.\u003c\/p\u003ed\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to replace the seals when replacing the cap?\u003c\/summary\u003e\n  \u003cp\u003eAbsolutely. This kit includes all the necessary seals for the end cap. Never reuse old seals, as they are crucial for preventing leaks and maintaining hydraulic pressure. Always install the new seals provided with the new cap.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723980542267,"sku":"24EC478R","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24EC478R.png?v=1763039221","url":"https:\/\/seasierra.com\/products\/power-trim-tilt-cylinder-end-cap-with-seals-fits-yamaha-60-90-hp-replaces-6h1-43821-11-00-6h1-43821-10-00","provider":"SeaSierra","version":"1.0","type":"link"}