{"product_id":"420950840-water-pump-housing-gasket-for-sea-doo-fish-21-300-1630-2026","title":"420950840 Water Pump Housing Gasket for Sea-Doo Fish 21-300 1630 2026","description":"\u003ch2\u003eWater Pump Housing Gasket for Sea-Doo Fish 21-300 1630\u003c\/h2\u003e\u003cp\u003eThis water pump housing gasket for Sea-Doo seals the pump housing to the engine block on the Fish 21-300 1630, keeping coolant where it belongs; it cross-references OEM 420950840.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis water pump housing gasket for Sea-Doo is a direct-fit sealing component for the Fish 21-300 1630 platform. It seals the joint between the water pump housing and the engine, preventing coolant leaks, maintaining proper flow, and protecting the cooling system from pressure loss. It is aimed at owners and mechanics performing routine pump service or a full rebuild on a 2026 model.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-cut to match the pump housing mating surface\u003c\/li\u003e\n\u003cli\u003eSeals coolant passages under operating temperature and pressure\u003c\/li\u003e\n\u003cli\u003eResists swelling, cracking, and coolant breakdown over time\u003c\/li\u003e\n\u003cli\u003eCross-references OEM part number 420950840\u003c\/li\u003e\n\u003cli\u003eThin profile maintains correct housing-to-block clearance\u003c\/li\u003e\n\u003cli\u003eInstalls with standard pump service tools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Sea-Doo Fish 21-300 1630, 2026\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWater pump housing resealing during routine service\u003c\/li\u003e\n\u003cli\u003eCooling system repair after a leak is traced to the housing joint\u003c\/li\u003e\n\u003cli\u003eFull pump rebuild on a 2026 Fish 21-300 1630\u003c\/li\u003e\n\u003cli\u003ePreventative replacement during engine-out service work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e420950840\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWater pump housing gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Platform\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSea-Doo Fish 21-300 1630\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Year\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this gasket come as a single unit or in a set? \u003cstrong\u003eA:\u003c\/strong\u003e It is supplied as one water pump housing gasket sized for the Fish 21-300 1630. Confirm whether your service procedure calls for additional seals or O-rings before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this gasket be reused if the housing is removed again? \u003cstrong\u003eA:\u003c\/strong\u003e Gaskets of this type are not intended for reuse once compressed. Fit a fresh gasket any time the pump housing is separated to keep the coolant seal reliable.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":51066353778774,"sku":"OO1C11519","price":29.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_6fa1919b-7793-46e8-9e5e-a27f1cfc9fb9.jpg?v=1794396447","url":"https:\/\/www.solidspare.com\/products\/420950840-water-pump-housing-gasket-for-sea-doo-fish-21-300-1630-2026","provider":"Solid Spare","version":"1.0","type":"link"}