{"product_id":"rein-che0504-engine-coolant-hose-expansion-tank-upper-to-cylinder-heads","title":"Rein CHE0504 Engine Coolant Hose - Expansion Tank (Upper) To Cylinder Heads","description":"\u003ch2\u003eOE Coolant Hose for BMW 545i and 645Ci\u003c\/h2\u003e\u003cp\u003eRein CHE0504 is an OE-quality engine coolant hose built for European cooling systems that use factory-style branched routing and thermoplastic quick-connect fittings. It is a direct-fit replacement for the upper expansion tank to cylinder heads hose on select 2004 BMW 545i and 645Ci applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for OE hose assemblies\u003c\/li\u003e\n\u003cli\u003eBranched hose design with 1 quick-connect fitting\u003c\/li\u003e\n\u003cli\u003eEPDM hose material for cooling-system service\u003c\/li\u003e\n\u003cli\u003eResistant to heat, salt, road debris, oil, and other contaminants\u003c\/li\u003e\n\u003cli\u003eReduces installation time by eliminating hose cutting and refitting\u003c\/li\u003e\n\u003cli\u003eBlack finish with application-specific dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Overview\u003c\/h2\u003e\u003cp\u003eRein CHE0504 is engineered to match the original hose layout, including branch shape and connector style, for a factory-style repair on European vehicles. The hose measures 29 inches centerline length and uses a branched configuration with one quick connect fitting, helping maintain the original routing from the expansion tank (upper) to the cylinder heads. For BMW 545i and BMW 645Ci cooling system service, this part number CHE0504 supports a clean OE replacement without modifying the hose or reusing worn connectors.\u003c\/p\u003e\u003cp\u003eThis part cross-references BMW 17127519254 for the same application.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2004 BMW 545i, expansion tank (upper) to cylinder heads, to 7\/04, with quick connectors.\u003c\/li\u003e\n\u003cli\u003eFits 2004 BMW 645Ci, expansion tank (upper) to cylinder heads, to 7\/04, with quick connectors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat This Hose Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoolant leaks at aging hose connections\u003c\/li\u003e\n\u003cli\u003eCracked or hardened original EPDM hose material\u003c\/li\u003e\n\u003cli\u003eFitment issues from reused quick connectors and O-rings\u003c\/li\u003e\n\u003cli\u003eExtended installation time caused by trimming or refitting\u003c\/li\u003e\n\u003cli\u003eCooling-system service on BMW 545i and 645Ci models with factory quick-connect routing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle build date before ordering, since this hose applies to 2004 BMW 545i and 645Ci models built to 7\/04. Confirm the hose routing, connector style, and branch layout against the original part before installation. Replace worn sealing components as part of a proper cooling-system repair, and inspect adjacent hoses and fittings for age-related wear.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eRein positions this hose as an OE-quality replacement for European vehicles, with dimensions and connector design matched to the original assembly. CHE0504 is built for direct-fit service where factory routing and quick-connect compatibility matter.\u003c\/p\u003e","brand":"Rein","offers":[{"title":"Default Title","offer_id":52431278178485,"sku":"DFBS-CHE0504","price":35.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/C8_CHE0504_Fro.jpg?v=1777850410","url":"https:\/\/www.partcatalog.com\/products\/rein-che0504-engine-coolant-hose-expansion-tank-upper-to-cylinder-heads","provider":"PartCatalog","version":"1.0","type":"link"}