{"product_id":"u-joint-yoke-oil-seal-fits-mercruiser-bravo-i-ii-iii-blackhawk-replaces-26-807006-26-18816-86730","title":"U Joint Yoke Oil Seal – Fits MerCruiser Bravo I II III Blackhawk (Replaces 26-807006, 26-18816, 86730)","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 \u003cstrong\u003eU Joint Yoke Oil Seal\u003c\/strong\u003e is designed for MerCruiser Bravo I, II, III, and Blackhawk sterndrives from 1988 and up. Compatible with Bravo I, Bravo II, and Bravo III models beginning at serial range 0B664190 \u0026amp; Up, as well as Blackhawk units from 1994–1995 (serial range 0F186717 \u0026amp; UP), this seal delivers reliable protection for your sterndrive's U-joint yoke assembly.\u003c\/p\u003e\n\u003cp\u003eDirect replacement for OEM part numbers 26-807006, 26-18816, and 86730, ensuring cross-compatibility across multiple MerCruiser service references.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAftermarket replacement engineered to OEM specifications\u003c\/li\u003e\n  \u003cli\u003ePrevents lubricant leakage and contamination in sterndrive yoke assemblies\u003c\/li\u003e\n  \u003cli\u003eSuitable for both fresh and saltwater applications\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\u003e26-807006\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e26-18816\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e86730\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eSerial Range\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eBravo I\u003c\/td\u003e\n        \u003ctd\u003e1988 \u0026amp; Up\u003c\/td\u003e\n        \u003ctd\u003e0B664190 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eBravo II\u003c\/td\u003e\n        \u003ctd\u003e1988 \u0026amp; Up\u003c\/td\u003e\n        \u003ctd\u003e0B664190 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eBravo III\u003c\/td\u003e\n        \u003ctd\u003e1988 \u0026amp; Up\u003c\/td\u003e\n        \u003ctd\u003e0B664190 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eBlackhawk\u003c\/td\u003e\n        \u003ctd\u003e1994–1995\u003c\/td\u003e\n        \u003ctd\u003e0F186717 \u0026amp; UP\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003ePart Type\u003c\/dt\u003e\n  \u003cdd\u003eU Joint Yoke Oil Seal\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMerCruiser Sterndrive Outdrives\u003c\/dd\u003e\n  \u003cdt\u003eCompatible Models\u003c\/dt\u003e\n  \u003cdd\u003eBravo I, Bravo II, Bravo III, Blackhawk\u003c\/dd\u003e\n  \u003cdt\u003eReplaces OEM\u003c\/dt\u003e\n  \u003cdd\u003e26-807006, 26-18816, 86730\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cp\u003ePackage contents are not specified in the provided data. Verify with seller before purchase if you require confirmation of included components.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and remove the sterndrive unit from the transom assembly following manufacturer service procedures.\u003c\/li\u003e\n  \u003cli\u003eDrain all lubricant from the outdrive and carefully disassemble the U-joint yoke housing.\u003c\/li\u003e\n  \u003cli\u003eRemove the old oil seal, taking care not to damage the sealing surface or bearing race.\u003c\/li\u003e\n  \u003cli\u003eClean the seal bore thoroughly, removing any debris, corrosion, or old sealant residue.\u003c\/li\u003e\n  \u003cli\u003eLightly coat the new seal's outer diameter with a marine-grade sealant or lubricant as recommended by your service manual.\u003c\/li\u003e\n  \u003cli\u003ePress the new seal into place using a seal driver or appropriately sized socket to ensure even seating.\u003c\/li\u003e\n  \u003cli\u003eReassemble the U-joint yoke assembly, torquing all fasteners to specification.\u003c\/li\u003e\n  \u003cli\u003eRefill the outdrive with the correct type and quantity of gear lubricant.\u003c\/li\u003e\n  \u003cli\u003eReinstall the sterndrive and perform a visual inspection for leaks after initial operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my yoke seal needs replacement?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs include visible lubricant leakage near the U-joint assembly, low fluid levels in the outdrive, or contamination of the gear oil. Inspect during routine maintenance intervals or if you notice dripping beneath the sterndrive.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this seal fit both Bravo II and Bravo III drives?\u003c\/summary\u003e\n  \u003cp\u003eYes, this seal is compatible with Bravo I, Bravo II, and Bravo III models from serial range 0B664190 \u0026amp; Up, as well as Blackhawk units from 1994–1995. Always verify your serial number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I install this seal without removing the entire outdrive?\u003c\/summary\u003e\n  \u003cp\u003eIn most cases, full outdrive removal is necessary to access the U-joint yoke assembly safely. Consult your service manual for model-specific disassembly procedures.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat type of lubricant should I use during installation?\u003c\/summary\u003e\n  \u003cp\u003eUse a marine-grade lubricant or sealant compatible with nitrile or synthetic rubber seals. Avoid petroleum-based products that may degrade the seal material over time.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should this seal be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplace the yoke seal whenever you observe leakage, during major outdrive service, or as part of a scheduled rebuild. Many technicians recommend inspection every 100 operating hours or annually.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs there a difference between the three OEM part numbers listed?\u003c\/summary\u003e\n  \u003cp\u003ePart numbers 26-807006, 26-18816, and 86730 are direct equivalents or supersessions. MerCruiser has updated part numbering over time, but all cross-reference to the same functional seal.\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":51025914855739,"sku":"2863","price":22.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_b8b661ae-3bbf-4dc8-b1dc-506f406b022b.jpg?v=1772975105","url":"https:\/\/seasierra.com\/products\/u-joint-yoke-oil-seal-fits-mercruiser-bravo-i-ii-iii-blackhawk-replaces-26-807006-26-18816-86730","provider":"SeaSierra","version":"1.0","type":"link"}