{"product_id":"rein-chs0645-engine-coolant-hose-flange-kit","title":"Rein CHS0645 Engine Coolant Hose Flange Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eRein CHS0645 is an application-specific coolant flange replacement kit for cooling system service on select Volkswagen and Audi models. It addresses common failure points in the coolant junction area by combining the flange, hose components, thermostat, temperature sensor, and sealing pieces in one repair-focused package.\u003c\/p\u003e\u003cp\u003eFits 2000-2005 Volkswagen Passat, N\/A. Fits 2001 Audi A4, N\/A. Fits 2001 Audi A4 Quattro, N\/A. This part cross-references Genuine 058121132C and URO 058121132A for the same application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eApplication-specific coolant flange kit for direct-fit cooling system service\u003c\/li\u003e\n\u003cli\u003eIncludes an OE-type virgin resin coolant flange for added durability\u003c\/li\u003e\n\u003cli\u003eUses OE-type rubber hose material with OE-style quick-connect hose ends\u003c\/li\u003e\n\u003cli\u003eSupports replacement of related cooling system wear items in one repair\u003c\/li\u003e\n\u003cli\u003eRein CHS0645 is built around the coolant flange, hoses, thermostat, and sealing components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eRepeated heat cycling can deform plastic coolant flanges and lead to leaks at the cylinder head coolant junction. Rein CHS0645 is engineered as a repair kit for that failure point, combining the main flange with matching hose and sealing components so the surrounding cooling system parts can be serviced together. For Volkswagen Passat and Audi A4 applications, this approach helps restore a proper seal and maintain stable coolant flow through the system.\u003c\/p\u003e\u003cp\u003eThe included flange is made from OE-type virgin resin, while the hose components use OE-type rubber compound and quick-connect fittings for a factory-style connection. Rein CHS0645 is a practical choice when replacing a leaking coolant flange and related parts during a cooling system repair.\u003c\/p\u003e\u003ch2\u003eCommon Repair Issues\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoolant leakage at the flange or hose junction\u003c\/li\u003e\n\u003cli\u003eCracking or deformation of the plastic coolant flange\u003c\/li\u003e\n\u003cli\u003eSwelling or deterioration of nearby cooling system hoses\u003c\/li\u003e\n\u003cli\u003eFaults in related thermostat or sensor service points\u003c\/li\u003e\n\u003cli\u003eRepeated cooling system disassembly for separate part replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eInspect the surrounding cooling system before installation and replace worn sealing surfaces as needed. A proper coolant flush should be performed during the repair, and the system should be refilled with the correct OE or Pentosin Pentofrost coolant specified by the manufacturer. Verify fitment by year, make, and model before ordering.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eRein positions this kit as an OE-quality replacement with direct-fitting components. Part number CHS0645 includes a 24-month, 24,000-mile warranty.\u003c\/p\u003e","brand":"Rein","offers":[{"title":"Default Title","offer_id":53305477038261,"sku":"DFBS-CHS0645","price":73.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/C8_CHS0645_Fro.jpg?v=1789625699","url":"https:\/\/www.partcatalog.com\/products\/rein-chs0645-engine-coolant-hose-flange-kit","provider":"PartCatalog","version":"1.0","type":"link"}