{"product_id":"aisin-thrbm-0004-engine-coolant-thermostat-housing-assembly","title":"Aisin THRBM-0004 Engine Coolant Thermostat Housing Assembly","description":"\u003ch2\u003eOE Replacement Thermostat Housing\u003c\/h2\u003e\u003cp\u003eThis Aisin engine coolant thermostat housing assembly is an OE-engineered replacement built for exact temperature control. It is a direct-fit solution for select BMW applications and supports consistent coolant regulation in the cooling system.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOE-engineered and manufactured for exact replacement fitment.\u003c\/li\u003e\n\u003cli\u003eThermostat housing assembly for integrated cooling system service.\u003c\/li\u003e\n\u003cli\u003eExact temperature specification for controlled coolant flow.\u003c\/li\u003e\n\u003cli\u003eUltra-Premium OE Replacement line from Aisin.\u003c\/li\u003e\n\u003cli\u003eFits select BMW 535i, 535i xDrive, 535i GT, 640i xDrive, 740i, and ActiveHybrid 5 applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eAisin THRBM-0004 is an engine coolant thermostat housing assembly developed as an OE-style replacement for BMW cooling system service. The assembly is specified for exact temperature operation and is listed for multiple BMW platforms, including 535i, 535i xDrive, 535i GT, 640i xDrive, 740i, and ActiveHybrid 5 models. If you are replacing a thermostat housing on a BMW 535i or BMW 640i xDrive, this part number provides a direct replacement reference for the application. Part number THRBM-0004 is also cross-referenced to Beck\/Arnley 143-0929 and Gates 34781 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoolant temperature regulation concerns.\u003c\/li\u003e\n\u003cli\u003eThermostat housing leakage or housing wear.\u003c\/li\u003e\n\u003cli\u003eCooling system service on OE-style BMW applications.\u003c\/li\u003e\n\u003cli\u003eTemperature control issues tied to thermostat assembly failure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the engine code and cooling system configuration before ordering. Match the part number THRBM-0004 to the vehicle application and confirm the thermostat temperature specification listed for your BMW model. Because this is a housing assembly, inspect adjacent cooling components during replacement to avoid repeat service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eAisin identifies this part as an OE-engineered and manufactured replacement with exact temperature control. The Ultra-Premium OE Replacement line reflects Aisin's focus on direct-fit cooling system components for service applications.\u003c\/p\u003e","brand":"Aisin","offers":[{"title":"Default Title","offer_id":53510963953845,"sku":"BKQL-THRBM-0004","price":74.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/A8_THRBM0004_Fro.jpg?v=1791868127","url":"https:\/\/www.partcatalog.com\/products\/aisin-thrbm-0004-engine-coolant-thermostat-housing-assembly","provider":"PartCatalog","version":"1.0","type":"link"}