{"product_id":"dorman-902-5118-engine-coolant-thermostat-housing-assembly","title":"Dorman 902-5118 Engine Coolant Thermostat Housing Assembly","description":"\u003ch2\u003eReliable Engine Coolant Thermostat Housing Assembly for BMW Models\u003c\/h2\u003e\u003cp\u003eThe Dorman 902-5118 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for select BMW vehicles. Engineered with durable plastic and including a thermostat and gasket, this assembly supports efficient cooling system performance for BMW 318i, 318is, 318ti, and Z3 models.\u003c\/p\u003e\u003ch2\u003eKey Features of Dorman 902-5118 Thermostat Housing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable black plastic for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes one thermostat calibrated to open at 203°F for precise temperature control\u003c\/li\u003e\n\u003cli\u003eComes with a gasket to ensure a secure, leak-free seal\u003c\/li\u003e\n\u003cli\u003eFeatures four mounting holes for stable installation\u003c\/li\u003e\n\u003cli\u003eFlange dimensions: 4.5 inches length and width, 0.45 inches thickness\u003c\/li\u003e\n\u003cli\u003eOne outlet port designed for efficient coolant flow\u003c\/li\u003e\n\u003cli\u003eCompatible with BMW 318i, 318is, 318ti, and Z3 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 902-5118 thermostat housing assembly is a critical component in the cooling system of BMW 318i, 318is, 318ti, and Z3 vehicles. Made from high-quality plastic, it offers resistance to corrosion and heat, extending the life of the cooling system. The included thermostat opens at 203 degrees Fahrenheit, ensuring the engine reaches and maintains the correct operating temperature. The assembly features four mounting holes with precise bolt hole center measurements (3.1 in, 3.2 in, 4 in, 3 in) for secure attachment. The flange size of 4.5 by 4.5 inches with a thickness of 0.45 inches provides a stable and reliable fit. This assembly also includes a gasket to prevent coolant leaks and maintain system integrity.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for faulty or leaking thermostat housing assemblies in BMW 318i, 318is, 318ti, and Z3\u003c\/li\u003e\n\u003cli\u003eResolves engine overheating caused by thermostat failure\u003c\/li\u003e\n\u003cli\u003ePrevents coolant leaks due to worn or damaged housing gaskets\u003c\/li\u003e\n\u003cli\u003eRestores proper coolant flow and temperature regulation\u003c\/li\u003e\n\u003cli\u003eAddresses issues related to cracked or warped plastic housings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the engine is cool before beginning installation to avoid burns. Remove the old thermostat housing carefully, cleaning the mounting surface thoroughly to remove any old gasket material. Use the included gasket to create a proper seal and tighten mounting bolts evenly to the manufacturer’s torque specifications. Note that mounting hardware is not included with this assembly and must be reused or sourced separately.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5118 thermostat housing assembly undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details are not provided, Dorman typically offers limited warranties on their replacement parts to cover defects in material and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52111221293237,"sku":"BKKY-902-5118","price":52.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_9025118_Ang.jpg?v=1775160493","url":"https:\/\/www.partcatalog.com\/products\/dorman-902-5118-engine-coolant-thermostat-housing-assembly","provider":"PartCatalog","version":"1.0","type":"link"}