{"product_id":"thermostat-and-gasket-for-mercruiser-3-0l-2-5l-4-6-cyl-140-120hp-59078t3-18-3650","title":"Thermostat And Gasket For MerCruiser 3.0L 2.5L 4 6 Cyl 140 120HP 59078T3 18-3650","description":"\u003cstrong\u003eThis Thermostat \u0026amp; Gasket is a replacement thermostat and gasket set compatible with MerCruiser 3.0L, 2.5L, 4 and 6 cylinder engines rated at 140HP and 120HP, and matches OEM Part# 59078T3 and 18-3650.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003eThis thermostat and gasket set is designed for MerCruiser marine engines, specifically the 3.0L and 2.5L four and six cylinder models producing 140HP and 120HP. It regulates engine coolant temperature to ensure optimal performance and prevents overheating. This replacement kit is essential for MerCruiser owners maintaining their stern drive or inboard engines.\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIncludes thermostat and gasket for a complete cooling system service\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM part numbers 59078T3 and 18-3650\u003c\/li\u003e\n\u003cli\u003eConstructed from corrosion-resistant materials for marine environments\u003c\/li\u003e\n\u003cli\u003eEnsures consistent engine operating temperature for fuel efficiency and longevity\u003c\/li\u003e\n\u003cli\u003eEasy installation with basic hand tools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 3.0L 4-cylinder engines (140HP)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 2.5L 4-cylinder engines (120HP)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder and 6-cylinder engines with these displacement and HP ratings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing old or failed thermostats on MerCruiser outdrive and inboard engines\u003c\/li\u003e\n\u003cli\u003ePerforming routine cooling system maintenance during winterization or spring launch\u003c\/li\u003e\n\u003cli\u003eRestoring proper engine temperature regulation after overheating episodes\u003c\/li\u003e\n\u003cli\u003eEnsuring reliable operation in saltwater or freshwater conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 59078T3, 18-3650\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What temperature does this thermostat open at?\u003cstrong\u003e A:\u003c\/strong\u003e This thermostat typically opens at the standard marine engine operating temperature, usually around 160°F; verify your engine's specification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is the gasket reusable?\u003cstrong\u003e A:\u003c\/strong\u003e No, the gasket should be replaced each time the thermostat is serviced to ensure a proper seal.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53676862931217,"sku":"ZZ2Y01403","price":63.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_6c5e4770-8071-4cf4-8197-00a9911bd9fb.jpg?v=1781579640","url":"https:\/\/www.duraforce.com\/products\/thermostat-and-gasket-for-mercruiser-3-0l-2-5l-4-6-cyl-140-120hp-59078t3-18-3650","provider":"DURAFORCE","version":"1.0","type":"link"}