{"product_id":"420256606-valve-seat-sleeve-for-sea-doo-challenger-s-2-x-155-1503-2012","title":"420256606 Valve Seat Sleeve for Sea-Doo Challenger S 2 x 155 1503 2012","description":"\u003ch2\u003eValve Seat Sleeve for Sea-Doo\u003c\/h2\u003e\u003cp\u003eThis valve seat sleeve is a replacement engine component for Sea-Doo 1503 4-TEC powerplants, designed to restore proper valve seating and sealing in the cylinder head for reliable compression and combustion, and it is a direct reference to OEM part 420256606.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis valve seat sleeve for Sea-Doo is a precision-machined insert that presses into the cylinder head to give the valve a stable, correctly sized seat. The valve seat sleeve restores the sealing surface between valve and head so compression stays consistent and combustion stays efficient. It suits riders and mechanics rebuilding or refreshing a 2012 Challenger S with the twin 155 1503 engine package.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined seat surface for consistent valve sealing\u003c\/li\u003e\n\u003cli\u003eRestores worn or damaged valve seat geometry in the cylinder head\u003c\/li\u003e\n\u003cli\u003eBuilt to handle the heat and stress of a 1503 engine\u003c\/li\u003e\n\u003cli\u003eDirect reference to OEM part number 420256606\u003c\/li\u003e\n\u003cli\u003eIntended for cylinder head rebuild and valve service work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Sea-Doo Challenger S with 2 x 155 1503 engine, 2012\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCylinder head rebuilds on 1503 4-TEC engines\u003c\/li\u003e\n\u003cli\u003eValve jobs where the original seat is worn or damaged\u003c\/li\u003e\n\u003cli\u003eTop-end refresh after overheating or compression loss\u003c\/li\u003e\n\u003cli\u003eShop and DIY service work on Challenger S models\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\u003e420256606\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eValve seat sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Family\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1503 4-TEC\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 sleeve fit both intake and exhaust valves? \u003cstrong\u003eA:\u003c\/strong\u003e Fitment depends on the specific valve position and head design, so confirm the location against your service manual before ordering. \u003cstrong\u003eQ:\u003c\/strong\u003e Why replace a valve seat sleeve instead of the whole head? \u003cstrong\u003eA:\u003c\/strong\u003e A new sleeve restores the sealing surface at a fraction of the cost of a complete head assembly when the casting itself is still sound.\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":51063127408726,"sku":"OO1C06847","price":36.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_50b79bad-9ca3-41cd-882b-5951c8c00f12.jpg?v=1794318316","url":"https:\/\/www.solidspare.com\/products\/420256606-valve-seat-sleeve-for-sea-doo-challenger-s-2-x-155-1503-2012","provider":"Solid Spare","version":"1.0","type":"link"}