{"product_id":"dorman-902-103-engine-coolant-thermostat-housing-lower","title":"Dorman 902-103 Engine Coolant Thermostat Housing - Lower","description":"\u003ch2\u003eReliable Engine Coolant Thermostat Housing for Chevrolet S10 and GMC Sonoma\u003c\/h2\u003e\u003cp\u003eThe Dorman 902-103 engine coolant thermostat housing is designed to provide a durable and precise fit for Chevrolet S10 and GMC Sonoma models. Crafted from aluminum and steel, this thermostat housing ensures efficient heat management and long-lasting performance.\u003c\/p\u003e\u003ch2\u003eKey Features of Dorman 902-103 Thermostat Housing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConstructed from high-quality aluminum and steel for strength and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eBlack and silver finish for durability and corrosion protection\u003c\/li\u003e\n\u003cli\u003eOutlet port diameter of 0.757 inches for proper coolant flow\u003c\/li\u003e\n\u003cli\u003eIncludes gasket and O-rings to ensure a secure, leak-free seal\u003c\/li\u003e\n\u003cli\u003eFive mounting holes with a diameter of 0.36 inches for stable installation\u003c\/li\u003e\n\u003cli\u003eHousing neck angle set at 45 degrees to match OEM specifications\u003c\/li\u003e\n\u003cli\u003ePackage contains coolant adapter pipe, housing gasket, thermostat gasket, and ignition components\u003c\/li\u003e\n\u003cli\u003eThermostat not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 902-103 engine coolant thermostat housing is engineered to meet the exact specifications required by Chevrolet S10 and GMC Sonoma vehicles. Its aluminum and steel construction offers a balance of lightweight durability and resistance to heat and corrosion. The housing features a 45-degree neck angle and a 0.757-inch outlet port diameter, ensuring compatibility with the vehicle’s cooling system. Included gaskets and O-rings help maintain a tight seal, preventing coolant leaks and maintaining system pressure. This part does not include the thermostat itself but provides all necessary components for a reliable housing replacement.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for cracked or damaged thermostat housing\u003c\/li\u003e\n\u003cli\u003ePrevents coolant leaks caused by worn or failed seals\u003c\/li\u003e\n\u003cli\u003eRestores proper coolant flow and engine temperature regulation\u003c\/li\u003e\n\u003cli\u003eAddresses overheating issues related to faulty housing components\u003c\/li\u003e\n\u003cli\u003eEnsures secure mounting with five mounting holes matching OEM specs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman 902-103 thermostat housing, ensure all old gasket material is thoroughly cleaned from the mounting surface. Use the included gaskets and O-rings to achieve a proper seal. Verify the 45-degree housing neck angle aligns correctly with the vehicle’s coolant hoses. Since bolts are not included, reuse the original mounting hardware or source appropriate replacements. Double-check for leaks after installation by running the engine to operating temperature.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for Chevrolet S10 and GMC Sonoma vehicles. The 902-103 thermostat housing undergoes rigorous quality control to ensure durability and fitment accuracy. Please refer to Dorman’s warranty policy for specific coverage details.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52111220048053,"sku":"BKKY-902-103","price":50.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_902103_Fro.jpg?v=1775160486","url":"https:\/\/www.partcatalog.com\/products\/dorman-902-103-engine-coolant-thermostat-housing-lower","provider":"PartCatalog","version":"1.0","type":"link"}