{"product_id":"motorad-447-185-engine-coolant-thermostat-185-f-w-seal-6-6l-diesel","title":"Motorad 447-185 Engine Coolant Thermostat 185°F w\/ Seal - 6.6L Diesel","description":"\u003cp\u003eKeep your 6.6L Duramax diesel running at the correct operating temperature with the Motorad 447-185 engine coolant thermostat. Built by an OE supplier to OEM specifications, this thermostat uses a copper case and wax compound to react quickly and accurately as coolant temperature changes, helping your cooling system respond the way it was designed to. The offset design and integrated air relief valve support proper installation and coolant flow, while the included OEM-style seal helps promote a leak-free fit at the housing. Rated to open at 185°F, this thermostat is designed as a direct-fit replacement, so there is no guesswork when it's time to restore reliable engine temperature regulation. Whether you're maintaining a Silverado, Sierra, Express, Savana, or Kodiak with the 6.6L diesel, the 447-185 gives you an OEM-quality option for a critical cooling system component.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003eCopper case and wax compound deliver rapid, precise response to coolant temperature changes\u003c\/li\u003e\n  \u003cli\u003eOffset design and air relief valve support proper coolant flow and installation\u003c\/li\u003e\n  \u003cli\u003eIncludes OEM-style seal for a leak-conscious, direct-fit installation experience\u003c\/li\u003e\n  \u003cli\u003eOpens at 185°F, matching OEM specification for correct engine operating temperature\u003c\/li\u003e\n  \u003cli\u003eManufactured by an OE supplier to OEM materials, specifications, and processes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplication Summary\u003c\/h3\u003e2001-2006 Chevrolet Silverado 3500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2001-2006 GMC Sierra 3500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2001-2024 Chevrolet Silverado 2500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2001-2024 GMC Sierra 2500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2003-2009 Chevrolet C4500 Kodiak 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2003-2009 Chevrolet C5500 Kodiak 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2003-2009 GMC C4500 Topkick 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2003-2009 GMC C5500 Topkick 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2005 Workhorse Custom Chassis P42 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2005-2011 Workhorse LF72 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2006 Hummer H1 6.6L -CC 400CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2006, 2008-2009 Chevrolet Express 3500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2006-2016 Chevrolet Express 2500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2006-2016 GMC Savana 2500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2006-2016 GMC Savana 3500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007 Chevrolet Silverado 2500 HD Classic 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007 Chevrolet Silverado 3500 Classic 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007 GMC Sierra 2500 HD Classic 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007 GMC Sierra 3500 Classic 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007 Workhorse Custom Chassis W72 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007, 2010-2016 Chevrolet Express 3500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007-2024 Chevrolet Silverado 3500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2007-2024 GMC Sierra 3500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2009-2016 Chevrolet Express 4500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2009-2016 GMC Savana 4500 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2019-2020 Chevrolet Silverado 4500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2019-2020 Chevrolet Silverado 5500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2019-2020 Chevrolet Silverado 6500 HD 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e2019-2020 International CV515 6.6L 6599CC 403CID V8 OHV 32 Valve Turbocharged DIESEL\u003cbr\u003e\n\u003cdiv class=\"-partnumber\"\u003ePart Numbers: 447-185\u003c\/div\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Motorad\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 447-185\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Engine Coolant Thermostat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 055644447858\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00055644447858\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 2.2500 x 2.2500 x 2.2500 IN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 2.2500 x 2.2500 x 2.2500 IN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight:\u003c\/strong\u003e 0.1500 PG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1 EA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Copper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket or Seal Pre-Installed:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSealing Flange Outside Diameter:\u003c\/strong\u003e 2.13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSealing Flange Outside Diameter:\u003c\/strong\u003e 54.10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight Between Flanges:\u003c\/strong\u003e 1.31\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight Between Flanges:\u003c\/strong\u003e 33.274\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMAP Controlled:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e OEM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInterchange\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003eGeneral Motors: 12680456\u003c\/li\u003e\n  \u003cli\u003eGeneral Motors: 97241129\u003c\/li\u003e\n  \u003cli\u003eOmnicraft: QRT57\u003c\/li\u003e\n  \u003cli\u003eParts Master: 54785\u003c\/li\u003e\n  \u003cli\u003eMotorad: 447-185\u003c\/li\u003e\n  \u003cli\u003eFVP Caps \u0026amp; Thermostats: 447-185\u003c\/li\u003e\n  \u003cli\u003eMurray Temperature Control: 44785\u003c\/li\u003e\n  \u003cli\u003ePronto: 447-185\u003c\/li\u003e\n  \u003cli\u003eFederated: 447-185\u003c\/li\u003e\n  \u003cli\u003eCanadian Tire: 447-185\u003c\/li\u003e\n  \u003cli\u003eACDelco: 12T99D\u003c\/li\u003e\n  \u003cli\u003eACDelco: 131-163\u003c\/li\u003e\n  \u003cli\u003eACDelco: 131-197\u003c\/li\u003e\n  \u003cli\u003eWorldparts: 9447185\u003c\/li\u003e\n  \u003cli\u003eAutopart International: 1601-290243\u003c\/li\u003e\n  \u003cli\u003eGates: 33946\u003c\/li\u003e\n  \u003cli\u003eStant: 14728\u003c\/li\u003e\n  \u003cli\u003ePep Boys: 447-185\u003c\/li\u003e\n  \u003cli\u003eBalkamp: 389-195\u003c\/li\u003e\n  \u003cli\u003eOMNIPARTS: 447-185\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty Duration:\u003c\/strong\u003e 12 Months\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Motorad","offers":[{"title":"Default Title","offer_id":47827530842261,"sku":"447-185","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/4266\/8181\/files\/447-185_Angle.jpg?v=1787708470","url":"https:\/\/mizumoauto.com\/products\/motorad-447-185-engine-coolant-thermostat-185-f-w-seal-6-6l-diesel","provider":"Mizumo Auto","version":"1.0","type":"link"}