Rein CHS0645 Engine Coolant Hose Flange Kit

Brand Rein CHS0645
Application Type Applicationspecific
Bullet Point 1 A comprehensive kit designed to service the commonly failing cool
Bullet Point 2 Oe-type virgin resin material coolant flange
Bullet Point 3 Oe-type heater and or radiator hose(s)
Bullet Point 4 Ensures a long life of the vehicle's cooling system
Container Type Bg
Country of Origin Tr
Item Height 3.2500
Item Length 12.5000
Item Level GTIN 888544082054
Item Qty 1
Item Quantity Size 1
Item Quantity Size UOM Ea
Item UOM Ea
Item Weight 1.0540
Item Weight Unit UOM Lb
Item Width 8.0000
Product Desc Extended 240 Rein oe quality coolant flange, hose and thermostat replacement k
Product Desc Invoice 40 Rein coolant flange replacement kit
Product Desc Long 80 Rein oe quality coolant flange, hose & thermostat replacement kit
Product Desc Short 20 Coolant flange kit
Warranty Distance 24000
Warranty Time 24
Fits Audi and Volkswagen · 8 vehicles

OE-quality replacement. Direct-fitting coolant flange kit for repair-focused cooling system service.

Virgin resin flange. Uses OE-type resin for improved durability at the coolant junction.

Factory-style hose ends. OE-type rubber hoses with quick-connect fittings for a secure connection.

Cross-references Genuine 058121132C, URO 058121132A and 025121142 for the same application. See all 7.

$73.18Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $73.18
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Overview

Rein 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.

Fits 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.

Key Features

  • Application-specific coolant flange kit for direct-fit cooling system service
  • Includes an OE-type virgin resin coolant flange for added durability
  • Uses OE-type rubber hose material with OE-style quick-connect hose ends
  • Supports replacement of related cooling system wear items in one repair
  • Rein CHS0645 is built around the coolant flange, hoses, thermostat, and sealing components

Product Details

Repeated 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.

The 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.

Common Repair Issues

  • Coolant leakage at the flange or hose junction
  • Cracking or deformation of the plastic coolant flange
  • Swelling or deterioration of nearby cooling system hoses
  • Faults in related thermostat or sensor service points
  • Repeated cooling system disassembly for separate part replacement

Installation Notes

Inspect 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.

Quality Assurance

Rein positions this kit as an OE-quality replacement with direct-fitting components. Part number CHS0645 includes a 24-month, 24,000-mile warranty.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2005VolkswagenPassat1.8LL4
2004VolkswagenPassat1.8LL4
2003VolkswagenPassat1.8LL4
2002VolkswagenPassat1.8LL4
2001AudiA41.8LL4
2001AudiA4 Quattro1.8LL4
2001VolkswagenPassat1.8LL4
2000VolkswagenPassat1.8LL4
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Genuine — 058121132CURO — 058121132A025121142032121142E078131120D078131120G078919501C