{"product_id":"420950772-head-gasket-for-sea-doo-cruise-21-300-1630-2026","title":"420950772 Head Gasket for Sea-Doo Cruise 21-300 1630 2026","description":"\u003ch2\u003eHead Gasket for Sea-Doo Cruise 21-300 1630\u003c\/h2\u003e\u003cp\u003eThis head gasket seals the cylinder head to the engine block on the Sea-Doo Cruise 21-300 1630, cross-referenced as 420950772, keeping combustion pressure contained and coolant passages sealed.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis head gasket for Sea-Doo is a replacement sealing component for the 1630 engine found in the Cruise 21-300. It maintains compression at the head-to-block joint while separating coolant and oil channels. Intended for riders and technicians servicing 2026 model year machines.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-cut to match the 1630 engine deck and head surfaces\u003c\/li\u003e\n\u003cli\u003eMulti-layer construction resists heat and combustion pressure\u003c\/li\u003e\n\u003cli\u003eSeals coolant and oil passages to prevent cross-contamination\u003c\/li\u003e\n\u003cli\u003eWithstands the thermal cycling of marine engine operation\u003c\/li\u003e\n\u003cli\u003eCross-references OEM part number 420950772\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Sea-Doo Cruise 21-300 1630, 2026\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds after overheating or compression loss\u003c\/li\u003e\n\u003cli\u003eCylinder head removal and reinstallation service\u003c\/li\u003e\n\u003cli\u003eCoolant leak repair at the head-to-block joint\u003c\/li\u003e\n\u003cli\u003eRoutine engine refresh on high-hour personal watercraft\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\u003e420950772\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1630\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHead Gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Years\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 Do I need to replace head bolts when installing this gasket? \u003cstrong\u003eA:\u003c\/strong\u003e Many torque-to-yield head bolts should not be reused, so check your service manual before reassembly. New bolts help ensure even clamping force across the gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this gasket be reused if the head is removed again? \u003cstrong\u003eA:\u003c\/strong\u003e Head gaskets are designed for single use and should be replaced any time the head is lifted. Reusing one risks compression loss and coolant leaks.\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":51114712137814,"sku":"OO1C20719","price":180.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_d88288da-7d0e-45c5-a62e-3d2927a8b2b7.jpg?v=1794481479","url":"https:\/\/www.solidspare.com\/products\/420950772-head-gasket-for-sea-doo-cruise-21-300-1630-2026","provider":"Solid Spare","version":"1.0","type":"link"}