{"product_id":"76-5-thermostat-129470-49801-fit-for-yanmar-3jh-4jh-marine-diesel-engine-3tnv88","title":"76.5℃ Thermostat 129470-49801 Fit for Yanmar 3JH 4JH Marine Diesel Engine 3TNV88","description":"\u003ch2\u003e76.5℃ Thermostat for Yanmar 129470-49801\u003c\/h2\u003e\u003cp\u003eThis 76.5℃ thermostat, referencing Yanmar part number 129470-49801, is a direct replacement cooling component engineered to maintain optimal engine operating temperature for Yanmar marine diesel engines. It is designed to replace the original thermostat in Yanmar 3JH and 4JH series engines, ensuring reliable thermal regulation. This 76.5℃ thermostat for Yanmar is a critical part for maintaining efficient combustion and preventing engine overheating or running too cool.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis 76.5℃ thermostat for Yanmar is a vital cooling system component that regulates coolant flow to keep the engine at its ideal temperature. It is specifically designed for use in Yanmar 3JH and 4JH marine diesel engines, as well as the 3TNV88 industrial engine. By maintaining a consistent 76.5°C operating temperature, this thermostat for Yanmar ensures efficient fuel burn and reduced engine wear.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecisely calibrated to open at 76.5°C for optimal engine temperature control\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Yanmar part number 129470-49801\u003c\/li\u003e\n\u003cli\u003eConstructed with corrosion-resistant materials for long-lasting marine durability\u003c\/li\u003e\n\u003cli\u003eEngineered to meet OEM specifications for reliable performance\u003c\/li\u003e\n\u003cli\u003eIncludes a robust wax pellet element for accurate and consistent operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yanmar 3JH\u003c\/li\u003e\n\u003cli\u003efor Yanmar 4JH\u003c\/li\u003e\n\u003cli\u003efor Yanmar 3JH2-E\u003c\/li\u003e\n\u003cli\u003efor Yanmar 4JH3-E\u003c\/li\u003e\n\u003cli\u003efor Yanmar 3TNV88\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplaces a faulty or stuck thermostat during routine marine engine maintenance\u003c\/li\u003e\n\u003cli\u003eEssential for repowering or rebuilding a Yanmar 3JH or 4JH diesel engine\u003c\/li\u003e\n\u003cli\u003eUsed by boat owners and mechanics to restore proper engine cooling system function\u003c\/li\u003e\n\u003cli\u003eCommonly installed when an engine runs too hot or fails to reach operating temperature\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e76.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e129470-49801\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMarine Diesel\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 does this thermostat work? \u003cstrong\u003eA:\u003c\/strong\u003e This thermostat contains a wax pellet that expands when the coolant reaches 76.5°C, opening the valve to allow coolant to flow to the radiator. When the engine cools, the pellet contracts, closing the valve to help the engine warm up quickly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What are signs of a failing thermostat? \u003cstrong\u003eA:\u003c\/strong\u003e Common symptoms include the engine overheating, running too cool, or taking an excessively long time to reach operating temperature. Replacing a worn thermostat with this 76.5℃ unit helps ensure consistent engine performance.\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":45562746339414,"sku":"ZZ3F03269","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_78eb0172-5eab-4d08-8fe4-5d9ab0fd2193.jpg?v=1789252479","url":"https:\/\/www.solidspare.com\/products\/76-5-thermostat-129470-49801-fit-for-yanmar-3jh-4jh-marine-diesel-engine-3tnv88","provider":"Solid Spare","version":"1.0","type":"link"}