{"product_id":"160-degree-marine-thermostat-kit-75-03222-replaces-sierra-18-3647","title":"Engineered Marine Products 160 Degree Thermostat Kit for Mercruiser Cooling Systems","description":"\u003cp\u003eThis 160 degree thermostat kit from Engineered Marine Products is built for Mercruiser cooling systems, giving boat owners a direct, reliable replacement when the factory thermostat fails or an engine starts running hot or cold. The kit regulates coolant flow through the raw water or closed cooling circuit, opening at 160 degrees Fahrenheit to keep engine operating temperature within the range the powerhead was designed for. Maintaining the correct opening temperature protects against overheating on one end and incomplete combustion, carbon buildup, and poor fuel economy on the other, both of which shorten engine life over time.\u003c\/p\u003e\u003cp\u003eThe kit features a machined housing component for a precise, consistent fit and is sized to install into standard Mercruiser thermostat housings without modification. Engineered Marine Products has supplied both OEM and aftermarket marine cooling parts for over 40 years, sourcing and engineering components to meet OEM standards at a lower cost than many competing kits. This 75-03222 kit is sold as a complete unit, so installers have what they need for a straightforward thermostat replacement in one purchase.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Engineered Marine Products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 75-03222\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Temperature Rating:\u003c\/strong\u003e 160 degrees Fahrenheit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercruiser cooling systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 x 5 x 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.179 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080476704\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature does this thermostat kit open at?\u003c\/strong\u003e The Engineered Marine Products thermostat kit, part number 75-03222, opens at 160 degrees Fahrenheit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the 75-03222 thermostat kit designed for?\u003c\/strong\u003e This kit is designed for Mercruiser cooling systems, making it a match for Mercruiser-equipped boats needing a 160 degree thermostat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a complete thermostat kit or just the thermostat?\u003c\/strong\u003e Part number 75-03222 is sold as a complete thermostat kit, not a bare thermostat, for a full replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 75-03222 thermostat kit?\u003c\/strong\u003e The kit measures 8 x 5 x 0.5 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the thermostat kit weigh?\u003c\/strong\u003e It weighs 0.179 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the thermostat housing component have?\u003c\/strong\u003e The housing component has a machined exterior finish for a precise fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho manufactures the 75-03222 thermostat kit?\u003c\/strong\u003e Engineered Marine Products manufactures this 160 degree thermostat kit, part number 75-03222.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the thermostat opening temperature matter?\u003c\/strong\u003e A 160 degree opening temperature keeps the engine within its designed operating range; running too cool can cause incomplete combustion and carbon buildup, while a failed thermostat can lead to overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Engineered Marine Products an OEM supplier or aftermarket only?\u003c\/strong\u003e Engineered Marine Products has supplied both OEM and marine aftermarket parts for over 40 years, engineering the 75-03222 kit to OEM standards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 75-03222 kit include a gasket?\u003c\/strong\u003e The listing identifies this as a thermostat kit rather than a single component, though the dossier does not itemize every part included in the box.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991292096731,"sku":"EMP-75-03222","price":31.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP_75-03222_MerCruiser_Thermostat_Kit__58012.1722504328.500.750.jpg?v=1785189137","url":"https:\/\/www.goodvibesmarina.com\/products\/160-degree-marine-thermostat-kit-75-03222-replaces-sierra-18-3647","provider":"Good Vibes Marina","version":"1.0","type":"link"}