{"product_id":"6d3-12411-00-00-thermostat-140-f-for-yamaha-255-fsh-sport-h-1800-2024-2026","title":"6D3-12411-00-00 Thermostat 140°F for Yamaha 255 FSH Sport H 1800 2024-2026","description":"\u003ch2\u003eThermostat for Yamaha 255 FSH Sport H 1800\u003c\/h2\u003e\u003cp\u003eThis 140°F thermostat for Yamaha replaces OEM part 6D3-12411-00-00 and regulates engine coolant temperature on 2024 through 2026 255 FSH Sport H 1800 boats.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis thermostat for Yamaha controls coolant flow so the 1800 engine reaches and holds its intended 140°F operating range. It is a direct replacement for OEM 6D3-12411-00-00 and suits owners maintaining or rebuilding the cooling system on the 255 FSH Sport H. The thermostat for Yamaha drops into the factory housing location without modification.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e140°F opening temperature matched to the 1800 engine cooling spec\u003c\/li\u003e\n\u003cli\u003eCross-references OEM part 6D3-12411-00-00 for straightforward replacement\u003c\/li\u003e\n\u003cli\u003eWax-pellet design opens and closes consistently across heat cycles\u003c\/li\u003e\n\u003cli\u003eSealing flange controls coolant bypass for stable running temperature\u003c\/li\u003e\n\u003cli\u003eBuilt to withstand continuous marine coolant and corrosion exposure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha 255 FSH Sport H 1800, 2024-2026\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRoutine cooling system service and thermostat replacement\u003c\/li\u003e\n\u003cli\u003eOverheating diagnosis on the 1800 engine\u003c\/li\u003e\n\u003cli\u003eWinterization and spring recommissioning checks\u003c\/li\u003e\n\u003cli\u003eRebuilds after impeller or coolant flow repairs\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\u003e6D3-12411-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEngine coolant thermostat\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 do I know if my thermostat needs replacing? \u003cstrong\u003eA:\u003c\/strong\u003e Slow warm-up, overheating, or erratic temperature readings on the 1800 often point to a stuck thermostat. Replacing it with the correct 140°F unit restores normal coolant regulation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this fit my exact model year? \u003cstrong\u003eA:\u003c\/strong\u003e It is listed for the 255 FSH Sport H 1800 from 2024 to 2026 and cross-references 6D3-12411-00-00. Confirm your serial number and housing 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":51067155873878,"sku":"OO1C15522","price":158.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_2085b5c1-6bfc-4eef-92a5-b7af12b095c3.jpg?v=1794398639","url":"https:\/\/www.solidspare.com\/products\/6d3-12411-00-00-thermostat-140-f-for-yamaha-255-fsh-sport-h-1800-2024-2026","provider":"Solid Spare","version":"1.0","type":"link"}