{"product_id":"6s5-12121-00-00-exhaust-valve-for-yamaha-sx-190-1800-2012-2023","title":"6S5-12121-00-00 Exhaust Valve for Yamaha SX 190 1800 2012-2023","description":"\u003ch2\u003eExhaust Valve for Yamaha\u003c\/h2\u003e\u003cp\u003eThis exhaust valve for Yamaha personal watercraft replaces OEM part number 6S5-12121-00-00 and controls exhaust gas flow through the engine.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis exhaust valve for Yamaha is a direct replacement component for the 1800cc engine family. The exhaust valve for Yamaha seals combustion gases during the exhaust stroke and helps maintain proper compression for consistent power delivery. It suits riders performing top-end service or rebuilding a worn cylinder head.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eConstructed from heat-resistant alloy steel to handle high exhaust temperatures\u003c\/li\u003e\n\u003cli\u003eMachined head and stem dimensions for a precise fit in the cylinder head guide\u003c\/li\u003e\n\u003cli\u003eStem profile designed to work with standard valve seals\u003c\/li\u003e\n\u003cli\u003eManufactured to OEM cross-reference 6S5-12121-00-00 specifications\u003c\/li\u003e\n\u003cli\u003eSuited to 1800cc four-stroke marine engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha SX 190 (2012-2023)\u003c\/li\u003e\n\u003cli\u003efor Yamaha 1800 series models using the 6S5-12121-00-00 exhaust valve\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end engine rebuilds on 1800cc personal watercraft\u003c\/li\u003e\n\u003cli\u003eCylinder head service when exhaust valves show wear or sealing loss\u003c\/li\u003e\n\u003cli\u003eRestoring compression on high-hour marine engines\u003c\/li\u003e\n\u003cli\u003eRoutine valve replacement during scheduled engine maintenance\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\u003e6S5-12121-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExhaust Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Family\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1800cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePosition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExhaust\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 valve fit my engine model? \u003cstrong\u003eA:\u003c\/strong\u003e It is listed for Yamaha SX 190 and 1800 applications using part number 6S5-12121-00-00, so confirm your model and serial number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Should I replace valves individually or as a set? \u003cstrong\u003eA:\u003c\/strong\u003e Most engine builders replace all exhaust valves together during a top-end rebuild to keep wear even across the cylinder head.\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":51065539952726,"sku":"OO1C08114","price":50.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_00568b5a-b706-4dcb-90f8-a1d109551b32.jpg?v=1794394570","url":"https:\/\/www.solidspare.com\/products\/6s5-12121-00-00-exhaust-valve-for-yamaha-sx-190-1800-2012-2023","provider":"Solid Spare","version":"1.0","type":"link"}