{"product_id":"sierra-18-3554-marine-thermostat-replaces-omc-383307-fits-omc-stern-drive-inboard-143f","title":"Sierra Thermostat 18-3554, 143 Degree F, OMC Stern Drive Replacement, OE 383307","description":"\u003cp\u003eThe Sierra 18-3554 Thermostat is a replacement engine thermostat designed for use in OMC stern drive applications. It regulates coolant flow to keep the engine operating within its designed temperature range, opening at a rated temperature of 143 degrees F to protect against overheating while allowing the engine to reach efficient operating temperature quickly. The thermostat is built from alloy steel with a glossy white finish and is sized to fit directly in place of the original equipment thermostat it replaces.\u003c\/p\u003e\u003cp\u003eSierra manufactures this thermostat to meet or exceed the specifications of the original equipment part it replaces, making it a straightforward drop-in replacement for boat owners performing routine cooling system maintenance or troubleshooting an overheating engine. It is part of a broader Sierra thermostat kit lineup that also includes matching manifold and thermostat gaskets, sold separately under their own part numbers.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3554\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 2.6 inches D x 2.6 inches W x 0.6 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 143 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Glossy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999316028\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e OMC Thermostats \u0026amp; Gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for use in OMC stern drive applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e383307\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature does the Sierra 18-3554 thermostat open at?\u003c\/strong\u003e The Sierra 18-3554 thermostat is rated to open at 143 degrees F, regulating coolant flow to keep the engine within its designed operating temperature range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat applications is the 18-3554 thermostat designed for?\u003c\/strong\u003e This Sierra thermostat is designed for use in OMC stern drive applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3554 an OEM equivalent part?\u003c\/strong\u003e Yes, the 18-3554 replaces original equipment part number 383307, and Sierra builds each thermostat to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-3554 thermostat?\u003c\/strong\u003e The 18-3554 thermostat has a white glossy finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3554 thermostat made from?\u003c\/strong\u003e It is made from alloy steel with a glossy finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3554 thermostat weigh?\u003c\/strong\u003e The Sierra 18-3554 thermostat weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-3554 thermostat?\u003c\/strong\u003e The Sierra 18-3554 measures 2.6 inches D x 2.6 inches W x 0.6 inches H.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3554 come with the gaskets needed for installation?\u003c\/strong\u003e The 18-3554 is the thermostat itself; matching manifold and thermostat gaskets for this kit are sold as separate Sierra part numbers, so buyers replacing the full thermostat kit should order the gaskets alongside 18-3554.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-3554 thermostat manufactured?\u003c\/strong\u003e The country of origin for the 18-3554 thermostat is China.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3554 thermostat?\u003c\/strong\u003e The UPC for the Sierra 18-3554 thermostat is 030999316028.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988153217243,"sku":"SIE-18-3554","price":28.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3554_lg__12655.1558126785.500.750.jpg?v=1785188639","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3554-marine-thermostat-replaces-omc-383307-fits-omc-stern-drive-inboard-143f","provider":"Good Vibes Marina","version":"1.0","type":"link"}