{"product_id":"6s5-12121-00-00-exhaust-valve-for-yamaha-295xd-1800-2026","title":"6S5-12121-00-00 Exhaust Valve for Yamaha 295XD 1800 2026","description":"\u003ch2\u003eExhaust Valve for Yamaha\u003c\/h2\u003e\u003cp\u003eThis exhaust valve, OEM cross-reference 6S5-12121-00-00, regulates exhaust gas flow from the cylinder head on Yamaha 295XD 1800 marine engines.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis exhaust valve is a replacement component for the Yamaha 1800 engine fitted to the 295XD. The valve holds compression during combustion and opens to let exhaust gases exit the cylinder on each cycle. It is aimed at boat owners and marine technicians handling top-end work on a Yamaha 1800 powerplant.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOEM cross-reference 6S5-12121-00-00 for accurate matching\u003c\/li\u003e\n\u003cli\u003eValve dimensions made for the Yamaha 1800 cylinder head\u003c\/li\u003e\n\u003cli\u003eHeat-resistant alloy built for sustained marine exhaust temperatures\u003c\/li\u003e\n\u003cli\u003eGround stem surface for smooth travel through the valve guide\u003c\/li\u003e\n\u003cli\u003eFaced head for a reliable seal against the valve seat\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha 295XD (2026)\u003c\/li\u003e\n\u003cli\u003efor Yamaha 1800 engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCylinder head rebuilds on Yamaha 1800 marine engines\u003c\/li\u003e\n\u003cli\u003eReplacing a burnt or compression-loss exhaust valve\u003c\/li\u003e\n\u003cli\u003eValve clearance and compression maintenance\u003c\/li\u003e\n\u003cli\u003eMarina and boat yard repair work on the 295XD\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\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha 1800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExhaust Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment 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 How many exhaust valves does a Yamaha 1800 engine need? \u003cstrong\u003eA:\u003c\/strong\u003e The 1800 four-stroke engine uses one exhaust valve per cylinder, so order the quantity your head service requires. Confirm your engine configuration before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Should exhaust valves be replaced as a set? \u003cstrong\u003eA:\u003c\/strong\u003e Many mechanics replace all valves in a serviced head at once to keep wear even across cylinders. Follow your service manual for the correct procedure.\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":51065559941206,"sku":"OO1C08139","price":50.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_0e786190-2bc6-4d1c-9ce5-3d8f799a754a.jpg?v=1794394607","url":"https:\/\/www.solidspare.com\/products\/6s5-12121-00-00-exhaust-valve-for-yamaha-295xd-1800-2026","provider":"Solid Spare","version":"1.0","type":"link"}