{"product_id":"propeller-shaft-oil-seal-3863090-fits-omc-cobra-sx-stern-drives-replaces-3858303-3853474-3850482","title":"Propeller Shaft Oil Seal 3863090 – Fits OMC Cobra SX Stern Drives (Replaces 3858303, 3853474, 3850482)","description":"\u003ch2\u003ePropeller Shaft Oil Seal 3863090 – Fits OMC Cobra SX \u0026amp; Volvo Penta SX Stern Drives\u003c\/h2\u003e\n\u003cp\u003eThis propeller shaft oil seal is engineered for \u003cstrong\u003eOMC Cobra SX stern drives (1994 and newer)\u003c\/strong\u003e and compatible Volvo Penta SX drives. It provides a critical seal for the propeller shaft, preventing oil leakage from the lower gearcase and ensuring protection of the internal gearing.\u003c\/p\u003e\n\u003cp\u003eThis is a direct replacement for multiple OEM and aftermarket part numbers, designed to meet or exceed original specifications for fit and function. It installs in the propeller shaft carrier assembly within the lower unit gearcase.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation Location:\u003c\/strong\u003e Lower Unit Gearcase, Propeller Shaft Carrier\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Seals propeller shaft to prevent gearcase oil leakage\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Durable rubber housing with a reinforced metal casing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n    \u003ctable\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\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003e3858303\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003e3853474\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003e3850482\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003e0915223\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003e0769349\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n                \u003ctd\u003e3858303\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eGLM\u003c\/td\u003e\n                \u003ctd\u003e86260\u003c\/td\u003e\n            \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003ch3\u003eOMC Cobra SX Models\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n    \u003ctable\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\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\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSXC\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-C1\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-C2\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-CT\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-CT1\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-R\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-RT1\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-RT2\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eDP-S\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eDP-S1\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-C1AC\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-M\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003eAlso SX-M 1.43, 1.51, 1.60, 1.66, 1.79, 1.89, 1.97, 2.18\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-MTD\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003eAlso SX-MTD 1.66, 1.79\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-MTD3\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003e\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eOMC\u003c\/td\u003e\n                \u003ctd\u003eSX-A\u003c\/td\u003e\n                \u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003eAlso SX-A 1.43, 1.51, 1.60, 1.66, 1.79, 1.89, 1.97\u003c\/td\u003e\n            \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eVolvo Penta Models\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n    \u003ctable\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                \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\u003eSX\u003c\/td\u003e\n                \u003ctd\u003e3863090\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\u003eDPS-A\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003eAlso DPS-A OXi\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n                \u003ctd\u003eDPS-B\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003eAlso DPS-B OX\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n                \u003ctd\u003eDPS-B1\u003c\/td\u003e\n                \u003ctd\u003e3863090\u003c\/td\u003e\n                \u003ctd\u003eAlso DPS-B1 OX\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\u003ctable\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth\u003eSpecification\u003c\/th\u003e\n            \u003cth\u003eValue\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003ePropeller Shaft Oil Seal\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eInstallation Location\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eLower Unit Gearcase\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eRubber with metal casing\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eHousing Color\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eBlack\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003e50 g (0.11 lb)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003e1 Year (North Boatparts)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eUsed in propeller shaft carrier assembly\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cp\u003eEach package contains the following:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e1 x Oil Seal (Replaces 3863090, 3858303, 3853474, 3850482, 0915223, 0769349)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Some kits may also include an O-ring (3852865), Gasket, and\/or Cotter Pin (306394). Please verify contents if these additional items are required.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003cp\u003eProfessional installation is recommended. The general steps below are for reference only and may vary based on your specific drive model.\u003c\/p\u003e\n\u003col\u003e\n    \u003cli\u003eDrain the gearcase oil completely.\u003c\/li\u003e\n    \u003cli\u003eRemove the propeller from the propeller shaft.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and carefully remove the propeller shaft bearing carrier from the lower unit.\u003c\/li\u003e\n    \u003cli\u003eInspect the carrier and shaft for any damage, scoring, or wear.\u003c\/li\u003e\n    \u003cli\u003eCarefully pry out the old oil seal from the carrier, taking care not to damage the housing.\u003c\/li\u003e\n    \u003cli\u003eClean the seal housing area thoroughly to remove any old sealant or residue.\u003c\/li\u003e\n    \u003cli\u003ePress the new oil seal squarely into the carrier using a suitable seal driver or socket. Ensure it is seated evenly and to the correct depth.\u003c\/li\u003e\n    \u003cli\u003eApply a light coat of marine grease to the inner lip of the new seal.\u003c\/li\u003e\n    \u003cli\u003eReinstall the bearing carrier, ensuring any O-rings or gaskets are correctly placed.\u003c\/li\u003e\n    \u003cli\u003eTorque the carrier bolts to the manufacturer's specified value.\u003c\/li\u003e\n    \u003cli\u003eReinstall the propeller and refill the gearcase with the correct type and amount of oil.\u003c\/li\u003e\n    \u003cli\u003eCheck for leaks after running the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003e\u003cstrong\u003eQ: How can I confirm this seal fits my specific sterndrive model?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eA: The best method is to cross-reference your existing part number with the numbers listed in our cross-reference table. You can also consult our detailed compatibility tables for OMC and Volvo Penta models. Pay close attention to the model names and year ranges (1994 and up for OMC).\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eQ: What are the signs that my propeller shaft oil seal is failing?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eA: The most common sign of a failing seal is gear oil leaking from the propeller area. You may also notice fishing line or other debris wrapped around the propeller shaft, which can damage the seal. Another indicator is a \"milky\" or grayish appearance of the gear oil, which suggests water intrusion.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eQ: My kit came with extra parts like an O-ring and gasket. Do I need them?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eA: It depends on your specific sterndrive model and the components you are servicing. The large O-ring is typically for the bearing carrier housing. It is always a best practice to replace any O-rings or gaskets that are removed during the service to ensure a proper seal upon reassembly.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/dd\u003e\n  \u003cdt\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003c\/dt\u003e\n  \u003cdd\u003eThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n    \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51310658126137,"sku":"XR-2864","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/XR-2864_3d77708b-a68c-4b98-bd88-6cbe39fec9b2.png?v=1762053360","url":"https:\/\/jlmmarine.com\/products\/propeller-shaft-oil-seal-3863090-fits-omc-cobra-sx-stern-drives-replaces-3858303-3853474-3850482","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}