{"product_id":"420854449-power-valve-piston-for-sea-doo-xp-ltd-951-1998-1999","title":"420854449 Power Valve Piston for Sea-Doo XP LTD 951 1998-1999","description":"\u003ch2\u003ePower Valve Piston for Sea-Doo\u003c\/h2\u003e\u003cp\u003eThis power valve piston is a replacement internal component that moves within the power valve assembly to regulate exhaust port timing, and it cross-references OEM part number 420854449.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis power valve piston is made to fit inside the power valve assembly on the exhaust system of personal watercraft, where it moves to adjust exhaust port timing and support strong power delivery. As a replacement power valve piston, it suits riders servicing a worn or sticking valve on their watercraft. It fits Sea-Doo XP LTD 951 models from 1998 to 1999.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCross-references OEM part number 420854449 for easy identification\u003c\/li\u003e\n\u003cli\u003ePrecisely formed to move smoothly inside the power valve assembly\u003c\/li\u003e\n\u003cli\u003eBuilt to handle the heat and stress of two-stroke exhaust operation\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement for the original piston on supported models\u003c\/li\u003e\n\u003cli\u003eSupports consistent valve movement for stable power delivery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFor Sea-Doo XP LTD 951, 1998\u003c\/li\u003e\n\u003cli\u003eFor Sea-Doo XP LTD 951, 1999\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the power valve assembly during top-end service\u003c\/li\u003e\n\u003cli\u003eReplacing a worn, sticking, or carbon-fouled valve piston\u003c\/li\u003e\n\u003cli\u003eRestoring smooth exhaust port timing on two-stroke 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\u003e420854449\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower valve piston\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1998-1999\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 What causes a power valve piston to wear out? \u003cstrong\u003eA:\u003c\/strong\u003e Carbon buildup and heat cycles can cause the piston to stick or wear, which affects exhaust port timing. Cleaning or replacing the piston during service helps restore smooth valve operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I replace just the piston without the whole assembly? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, on many models the piston can be serviced separately from the housing. Check your service manual and model year before ordering.\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":51060201324630,"sku":"OO1C02114","price":37.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_9a8125d0-9d05-4bfd-869e-ea50058fba95.jpg?v=1794306986","url":"https:\/\/www.solidspare.com\/products\/420854449-power-valve-piston-for-sea-doo-xp-ltd-951-1998-1999","provider":"Solid Spare","version":"1.0","type":"link"}