{"product_id":"sierra-18-3670-marine-thermostat-kit-160f-fits-volvo-penta-120-140-hp-1980-81","title":"Sierra 18-3670 Thermostat Kit, 160 Degree F, Replaces GLM 13440, Fits Volvo Penta 2.5L \u0026 3.0L (1982-88)","description":"\u003cp\u003eThe Sierra 18-3670 Thermostat Kit is a complete engine temperature control kit for Volvo Penta 2.5L and 3.0L engines (1982-88). The kit opens at 160 degrees F, regulating coolant flow so the engine reaches and maintains proper operating temperature. It contains a thermostat and a thermostat housing, giving the buyer both wear components needed for a full thermostat replacement in one purchase rather than sourcing each part separately.\u003c\/p\u003e\u003cp\u003eSierra manufactures marine parts to meet or exceed the original equipment they replace, and this kit is built for the harsh marine operating environment. The housing and thermostat are made of durable plastic construction finished in white, sized to match the original Volvo Penta fitment for a direct, drop-in replacement. This kit is intended for boaters and marine technicians performing routine cooling system maintenance or replacing a failed or stuck-open\/stuck-closed thermostat on a compatible Volvo Penta engine.\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 18-3670\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermostat Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Temperature:\u003c\/strong\u003e 160 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Volvo Penta 2.5L \u0026amp; 3.0L (1982-88)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Thermostat (18-3558), Thermostat Housing (18-2858)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563088\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Volvo Penta 2.5L \u0026amp; 3.0L engines (1982-88).\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e982554, 314809, GLM 13440\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3670 thermostat kit fit?\u003c\/strong\u003e The Sierra 18-3670 Thermostat Kit fits Volvo Penta 2.5L and 3.0L engines (1982-88).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature does the 18-3670 thermostat open at?\u003c\/strong\u003e It opens at 160 degrees F, which is the rated opening temperature for the Sierra 18-3670 Thermostat Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-3670 kit?\u003c\/strong\u003e The kit contains one thermostat (Sierra 18-3558) and one thermostat housing (Sierra 18-2858), giving you both components needed for a complete thermostat replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-3670 replace?\u003c\/strong\u003e The Sierra 18-3670 Thermostat Kit cross-references to OEM numbers 982554 and 314809, and is interchangeable with GLM 13440.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3670 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-3670 is a genuine Sierra part, manufactured to meet or exceed the original equipment part it replaces on Volvo Penta 2.5L and 3.0L engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the thermostat housing made of?\u003c\/strong\u003e The thermostat housing in the Sierra 18-3670 kit is made of plastic, finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3670 thermostat kit weigh?\u003c\/strong\u003e The Sierra 18-3670 Thermostat Kit weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I order the thermostat and housing separately instead of the full kit?\u003c\/strong\u003e The individual components are Sierra 18-3558 (thermostat) and Sierra 18-2858 (thermostat housing), which are the same parts contained in the 18-3670 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include a gasket?\u003c\/strong\u003e The Sierra 18-3670 Thermostat Kit contains a thermostat (18-3558) and a thermostat housing (18-2858).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3670 fit engines outside the 1982-88 model years?\u003c\/strong\u003e The Sierra 18-3670 is specified for Volvo Penta 2.5L and 3.0L engines from 1982-88; fitment outside that range is not specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the GLM 13440 the same part as the Sierra 18-3670?\u003c\/strong\u003e GLM 13440 is listed as interchangeable with the Sierra 18-3670 Thermostat Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my thermostat needs replacement?\u003c\/strong\u003e A thermostat stuck open or closed will cause overheating or under-heating; the Sierra 18-3670 Thermostat Kit replaces both the thermostat and housing to resolve worn or failed components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988157542619,"sku":"SIE-18-3670","price":29.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3670_lg__50225.1558124895.500.750.jpg?v=1785187988","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3670-marine-thermostat-kit-160f-fits-volvo-penta-120-140-hp-1980-81","provider":"Good Vibes Marina","version":"1.0","type":"link"}