{"product_id":"motorad-623-189-engine-coolant-thermostat-housing-assembly","title":"Motorad 623-189 Engine Coolant Thermostat Housing Assembly","description":"\u003ch2\u003eOverview of Motorad Integrated Housing Thermostat 623-189\u003c\/h2\u003e\u003cp\u003eThe Motorad Integrated Housing Thermostat 623-189 is engineered for precise engine temperature regulation in select Mercedes-Benz models. Designed to maintain optimal coolant flow, this thermostat housing assembly supports efficient engine performance and longevity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Mercedes-Benz E350, GL320, ML320, R320, R350, Sprinter 2500, Sprinter 3500, and Sprinter 3500XD\u003c\/li\u003e\n\u003cli\u003eThermostat opening temperature at 189°F for accurate temperature control\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum, stainless steel, and copper materials\u003c\/li\u003e\n\u003cli\u003eIncludes a rubber gasket\/seal and a bleeder hole for effective coolant system venting\u003c\/li\u003e\n\u003cli\u003eFeatures 4 bolt holes and a single 1.91-inch outlet port\u003c\/li\u003e\n\u003cli\u003eEquipped with a jiggle pin to prevent air lock in the cooling system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Integrated Housing Thermostat Product Line\u003c\/h2\u003e\u003cp\u003eThe Motorad Integrated Housing Thermostat line combines the thermostat and housing into a single assembly, simplifying installation and improving reliability. This design reduces potential leak points and ensures consistent thermostat operation, which is critical for maintaining the correct engine temperature in Mercedes-Benz vehicles.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Motorad 623-189 thermostat housing assembly is crafted from a combination of aluminum, stainless steel, and copper, providing strength and corrosion resistance. It features a built-in thermostat calibrated to open at 189 degrees Fahrenheit, ensuring the engine reaches and maintains optimal operating temperature. The assembly includes a rubber gasket to create a secure seal and prevent coolant leaks. A bleeder hole is incorporated to allow trapped air to escape, reducing the risk of overheating. The jiggle pin further aids in air removal, enhancing coolant circulation. With four bolt holes and a single outlet port measuring 1.91 inches in diameter, this housing assembly is designed for direct replacement on compatible Mercedes-Benz models.\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 Mercedes-Benz E350, GL320, ML320, R320, R350, and Sprinter models\u003c\/li\u003e\n\u003cli\u003eResolves engine overheating caused by thermostat failure or coolant flow restriction\u003c\/li\u003e\n\u003cli\u003eEliminates coolant leaks due to worn or damaged seals\u003c\/li\u003e\n\u003cli\u003ePrevents air lock in the cooling system with integrated bleeder hole and jiggle pin\u003c\/li\u003e\n\u003cli\u003eRestores proper engine temperature regulation for improved fuel efficiency and emissions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the engine is cool before beginning installation to avoid burns or injury\u003c\/li\u003e\n\u003cli\u003eReplace the rubber gasket included with the assembly to ensure a proper seal\u003c\/li\u003e\n\u003cli\u003eDo not reuse old mounting hardware; new bolts are required but not included\u003c\/li\u003e\n\u003cli\u003eBleed the cooling system after installation to remove trapped air using the bleeder hole and jiggle pin features\u003c\/li\u003e\n\u003cli\u003eVerify thermostat opening temperature matches vehicle specifications (189°F for this part)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eMotorad manufactures the 623-189 thermostat housing assembly to meet OEM standards for fit, form, and function. The use of high-quality materials such as aluminum, stainless steel, and copper ensures durability and corrosion resistance. This part includes a rubber gasket for reliable sealing. While specific warranty details are not provided, Motorad products typically adhere to industry quality controls to support long-term vehicle performance.\u003c\/p\u003e","brand":"Motorad","offers":[{"title":"Default Title","offer_id":52190729404597,"sku":"BFNG-623-189","price":42.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/TZ_623189_Fro.jpg?v=1775592942","url":"https:\/\/www.partcatalog.com\/products\/motorad-623-189-engine-coolant-thermostat-housing-assembly","provider":"PartCatalog","version":"1.0","type":"link"}