{"product_id":"lower-unit-oil-seal-fits-omc-cobra-johnson-evinrude-replaces-332261-0332261-18-2065-86520","title":"Lower Unit Oil Seal – Fits OMC Cobra, Johnson, Evinrude (Replaces 332261, 0332261, 18-2065, 86520)","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\u003eLower Unit Oil Seal\u003c\/strong\u003e is a direct-fit replacement for OMC Cobra, Johnson, and Evinrude marine lower gearcase units. Engineered to prevent oil leakage and contamination in demanding marine environments, this seal maintains proper lubrication and extends lower unit life.\u003c\/p\u003e\n\u003cp\u003eThis seal directly replaces OEM part numbers 332261, 0332261, and aftermarket equivalents 18-2065 and 86520.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision-molded seal designed for OMC Cobra lower gearcase applications\u003c\/li\u003e\n  \u003cli\u003eEnsures proper oil retention in the lower unit assembly\u003c\/li\u003e\n  \u003cli\u003eCompatible with fresh and saltwater environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e332261\u003c\/td\u003e\n        \u003ctd\u003eOEM\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e0332261\u003c\/td\u003e\n        \u003ctd\u003eOEM\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-2065\u003c\/td\u003e\n        \u003ctd\u003eAftermarket\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e86520\u003c\/td\u003e\n        \u003ctd\u003eAftermarket\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003eCobra (Lower Unit)\u003c\/td\u003e\n        \u003ctd\u003e332261, 0332261\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\u003c\/td\u003e\n        \u003ctd\u003eLower Gearcase Units\u003c\/td\u003e\n        \u003ctd\u003e332261, 0332261\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEvinrude\u003c\/td\u003e\n        \u003ctd\u003eLower Gearcase Units\u003c\/td\u003e\n        \u003ctd\u003e332261, 0332261\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\u003eLower Unit Oil Seal\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eOMC Cobra, Johnson, Evinrude Lower Gearcase\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e332261, 0332261\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Cross-Reference\u003c\/dt\u003e\n  \u003cdd\u003e18-2065, 86520\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eOil-resistant elastomer\u003c\/dd\u003e\n  \u003cdt\u003eEnvironment\u003c\/dt\u003e\n  \u003cdd\u003eMarine (fresh \u0026amp; saltwater)\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\u003eOil seal × 1\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eRemove the lower unit from the drive assembly according to your service manual.\u003c\/li\u003e\n  \u003cli\u003eDrain all lower unit oil and inspect for metal debris or contamination.\u003c\/li\u003e\n  \u003cli\u003eRemove the old oil seal carefully using a seal puller or appropriate tool to avoid damaging the seal bore.\u003c\/li\u003e\n  \u003cli\u003eClean the seal bore thoroughly and inspect for scratches, corrosion, or damage.\u003c\/li\u003e\n  \u003cli\u003eLightly coat the new seal outer diameter and lip with lower unit oil.\u003c\/li\u003e\n  \u003cli\u003ePress the new seal into place evenly using a seal driver or appropriate installation tool until fully seated.\u003c\/li\u003e\n  \u003cli\u003eReassemble the lower unit components and refill with the manufacturer-specified lower unit oil.\u003c\/li\u003e\n  \u003cli\u003eCheck for leaks after initial operation and monitor oil level regularly.\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 lower unit oil seal is failing?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs include visible oil leaking from the lower unit, milky or discolored lower unit oil (indicating water intrusion), or lower oil levels between service intervals. If you notice any of these symptoms, inspect and replace the seal promptly to prevent gearcase damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the old seal during lower unit service?\u003c\/summary\u003e\n  \u003cp\u003eNo. Oil seals are designed for single-use installation and lose their sealing ability once removed. Always replace the seal whenever the lower unit is disassembled to ensure proper oil retention and prevent water contamination.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat happens if I don't replace a leaking lower unit oil seal?\u003c\/summary\u003e\n  \u003cp\u003eA leaking seal can allow water to enter the gearcase, contaminating the oil and leading to corrosion, bearing failure, and eventual gearcase seizure. Oil loss also reduces lubrication, causing excessive wear on gears and bearings. Replace failing seals immediately to avoid costly repairs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need special tools to install this seal?\u003c\/summary\u003e\n  \u003cp\u003eA seal driver or appropriately sized socket that matches the seal outer diameter is recommended for even, damage-free installation. Avoid using hammers or punches directly on the seal, as uneven pressure can distort the seal or damage the bore.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace lower unit oil seals?\u003c\/summary\u003e\n  \u003cp\u003eReplace oil seals whenever the lower unit is disassembled for service, or immediately if you detect leaks or oil contamination. Regular inspection during routine maintenance (every 100 hours or annually) helps catch seal degradation early.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this seal work in saltwater applications?\u003c\/summary\u003e\n  \u003cp\u003eYes. This seal is designed for marine use in both fresh and saltwater environments. Ensure you use the correct lower unit oil specified by the manufacturer and rinse the lower unit after saltwater use to maximize seal life.\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":51025915412795,"sku":"3802","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/s-l1600_1adcb308-8dd5-4d89-9185-8a7b0971af39.webp?v=1772975129","url":"https:\/\/seasierra.com\/products\/lower-unit-oil-seal-fits-omc-cobra-johnson-evinrude-replaces-332261-0332261-18-2065-86520","provider":"SeaSierra","version":"1.0","type":"link"}