{"product_id":"thermostat-for-volvo-penta-sterndrive-18-3557-replaces-21148403-143-f-62-c","title":"Thermostat for Volvo Penta Sterndrive 18-3557 Replaces 21148403 (143° F \/ 62° C)","description":"\u003ch2\u003eThermostat for Volvo Penta Sterndrive\u003c\/h2\u003e\u003cp\u003eThis thermostat, part number 18-3557, replaces OEM 21148403 and regulates engine coolant temperature for Volvo Penta sterndrive engines, opening at 143°F (62°C) to maintain optimal operating conditions.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis thermostat is a direct replacement for Volvo Penta sterndrive engines, ensuring the engine reaches and maintains its ideal temperature. The thermostat, which replaces 21148403, opens at 143°F (62°C) to allow coolant flow when the engine warms up. It is built to OE specifications for reliable performance in marine environments.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision temperature rating of 143°F (62°C) for accurate regulation\u003c\/li\u003e\n\u003cli\u003eConstructed from corrosion-resistant materials for saltwater use\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Volvo Penta sterndrive systems\u003c\/li\u003e\n\u003cli\u003eIncludes a wax-pellet element for consistent response\u003c\/li\u003e\n\u003cli\u003eMeets OEM specifications for a perfect fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplacing a stuck-open or stuck-closed thermostat on a sterndrive engine\u003c\/li\u003e\n\u003cli\u003eMaintaining proper engine temperature during long cruises\u003c\/li\u003e\n\u003cli\u003eRestoring cooling system efficiency after overheating\u003c\/li\u003e\n\u003cli\u003eInstalling during routine winterization or summerization\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\u003e18-3557 (replaces 21148403)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e143°F \/ 62°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVolvo Penta sterndrive\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 Will this thermostat fit my Volvo Penta 5.0 GXi sterndrive? \u003cstrong\u003eA:\u003c\/strong\u003e This thermostat is designed for Volvo Penta sterndrive engines, but always verify your engine's specific part number for compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the correct installation torque? \u003cstrong\u003eA:\u003c\/strong\u003e Refer to your service manual; typical torque is around 15 ft-lbs, but confirm with your engine's specifications.\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":45556599783510,"sku":"ZZ3E00992","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_3b361ef0-422f-4dc2-8167-50e450ccf4be.jpg?v=1789214977","url":"https:\/\/www.solidspare.com\/products\/thermostat-for-volvo-penta-sterndrive-18-3557-replaces-21148403-143-f-62-c","provider":"Solid Spare","version":"1.0","type":"link"}