{"product_id":"seachoice-50-21018-full-flow-oil-filter-20-micron","title":"Seachoice 50-21018 Full-Flow Oil Filter – 20 Micron | Yamaha 4-Stroke Outboard","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eSeachoice 50-21018 Full-Flow Oil Filter – 20 Micron\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 50-21018  |  \u003cstrong\u003eSKU:\u003c\/strong\u003e 50-21018  |  \u003cstrong\u003eUPC:\u003c\/strong\u003e 719249210186\u003c\/p\u003e\n\n\u003cp\u003eThe Seachoice 50-21018 is a 20-micron full-flow spin-on oil filter for selected Yamaha 4-stroke outboard engines, specifically those using the 3FV and 3FC filter thread series. It crosses directly to Sierra 18-7902 and to six Yamaha OEM filter revisions across the 3FV-13440 and 3FC-13440 families. Built with a high-efficiency cellulose element, anti-drain-back valve, epoxy-coated canister, reinforced body, and heavy-duty end-cap seals, it meets or exceeds original equipment filtration requirements.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFiltration: 20 micron\u003c\/li\u003e\n\u003cli\u003eFilter type: Full-flow spin-on\u003c\/li\u003e\n\u003cli\u003eThread: 20 mm x 1.5\u003c\/li\u003e\n\u003cli\u003eFilter media: High-efficiency cellulose\u003c\/li\u003e\n\u003cli\u003eAnti-drain-back valve: Yes\u003c\/li\u003e\n\u003cli\u003eCanister: Epoxy-coated steel for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eBody: Reinforced construction\u003c\/li\u003e\n\u003cli\u003eEnd-cap seals: Heavy-duty\u003c\/li\u003e\n\u003cli\u003eManufactured in an ISO\/TS 16949 certified facility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eYamaha F9.9C \/ FT9.9D — selected years\u003c\/li\u003e\n\u003cli\u003eYamaha F15A — selected years\u003c\/li\u003e\n\u003cli\u003eYamaha F20A — selected years\u003c\/li\u003e\n\u003cli\u003eYamaha F25A — selected years\u003c\/li\u003e\n\u003cli\u003eYamaha F40A \/ F40B — selected years\u003c\/li\u003e\n\u003cli\u003eYamaha F50A \/ FT50B — selected years\u003c\/li\u003e\n\u003cli\u003eYamaha F80A and F100A — selected applications\u003c\/li\u003e\n\u003cli\u003eOther Yamaha 4-stroke outboards specifying a 3FV-13440 or 3FC-13440 series oil filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Confirm your Yamaha model, year, and existing OEM filter number before ordering. The 20 mm x 1.5 thread is specific to this filter family and differs from other Yamaha 4-stroke filters that may look similar. Exact model year coverage varies — matching a 3FV-13440 or 3FC-13440 series part number is the most reliable confirmation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eReplace at every scheduled engine oil service, following Yamaha’s recommended service interval — typically every 100 hours or once per season, whichever comes first.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRemove the old filter and confirm the old gasket has come away with it — a retained gasket will cause an oil leak\u003c\/li\u003e\n\u003cli\u003eClean the filter mounting surface\u003c\/li\u003e\n\u003cli\u003eLightly coat the new filter gasket with fresh engine oil before threading it on\u003c\/li\u003e\n\u003cli\u003eTighten by hand plus ¾ turn, or per Yamaha service specification — do not over-tighten\u003c\/li\u003e\n\u003cli\u003eRun the engine and inspect for leaks before returning to service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeachoice:\u003c\/strong\u003e 50-21018 \/ 21018\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra:\u003c\/strong\u003e 18-7902\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYamaha:\u003c\/strong\u003e 3FV-13440-00-00, 3FV-13440-10-00, 3FV-13440-20-00, 3FV-13440-30-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYamaha:\u003c\/strong\u003e 3FC-13440-20-00, 3FC-13440-30-00\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/sierra-7902-4-cycle-outboard-oil-filter\"\u003eSierra 7902 4-Cycle Outboard Oil Filter\u003c\/a\u003e — OEM-equivalent Sierra filter this unit replaces\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachoice-50-21011-full-flow-oil-filter-20-micron\"\u003eSeachoice 50-21011 Full-Flow Oil Filter – 20 Micron\u003c\/a\u003e — Mercury \u0026amp; Yamaha 69J-series outboard filter\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachoice-50-21001-full-flow-oil-filter-20-micron\"\u003eSeachoice 50-21001 Full-Flow Oil Filter – 20 Micron\u003c\/a\u003e — MerCruiser, OMC \u0026amp; Volvo Penta sterndrive filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e Routine oil changes on Yamaha F-series 4-stroke outboards in the 9.9 to 100 HP range that use the 3FV or 3FC filter thread. This is a common filter for mid-range Yamaha outboards produced from the late 1990s through the 2000s. The six Yamaha OEM part numbers in the 3FV and 3FC series all represent successive production revisions of the same filter, and this Seachoice unit covers all of them.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e Yamaha uses multiple oil filter threads across its 4-stroke outboard lineup, and several of them look nearly identical. Always confirm by matching a 3FV-13440 or 3FC-13440 Yamaha part number, or the Sierra 18-7902 cross-reference, rather than ordering by appearance or physical size alone. The 20 mm x 1.5 thread spec is the clearest technical differentiator from other Yamaha filter families.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199648596004,"sku":"50-21018","price":18.19,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/50-21017_Main_1eafda43-d670-49ad-90a2-26f3be918224.jpg?v=1785611142","url":"https:\/\/marisolmarine.com\/products\/seachoice-50-21018-full-flow-oil-filter-20-micron","provider":"Marisol Marine Company","version":"1.0","type":"link"}