Rein CHR0859 Radiator Coolant Hose - Lower

Brand Rein CHR0859
Position Lower
Color Black
End 1 Inside Diameter 34.49
End 2 Inside Diameter 18.82
Grade Type Standard replacement
Fits Audi and Volkswagen · 8 vehicles

OE direct replacement. Matches the original hose and assembly design.

Thermoplastic quick connects. Built with OEM-style fittings for a precise connection.

Standard replacement. A straightforward coolant hose for routine service.

Cross-references 4B0121055J for the same application. See all 1.

$62.58Free shipping
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OE-Style Lower Radiator Hose for European Applications

The Rein CHR0859 radiator coolant hose is a standard replacement hose for select Volkswagen and Audi applications. It is built to match OE hose dimensions and routing, including the branch sizing and thermoplastic quick-connect details used on the original assembly.

  • Black radiator coolant hose for cooling system service
  • Standard replacement grade for direct-fit repair work
  • End 1 inside diameter: 34.49 mm
  • End 2 inside diameter: 18.82 mm
  • OE-style shape and branch layout for factory-style routing
  • Rein CHR0859 for lower cooling system hose replacement

Fitment and Application Details

Compatible with 2000-2005 Volkswagen Passat, lower; 2001 Audi A4, lower; and 2001 Audi A4 Quattro, lower. This Rein CHR0859 hose is designed for European vehicles that use the lower radiator hose configuration shown in the fitment data, including Volkswagen Passat and Audi A4 applications.

Rein Automotive focuses on OE-quality cooling system parts for European vehicles, and this hose follows the original hose geometry for a factory-style replacement. The Rein CHR0859 part number is also useful when cross-checking catalog listings for the same application.

Common Cooling System Problems It Can Address

  • Cracked or split lower radiator hose
  • Coolant leaks at the hose body or connection points
  • Softening, swelling, or deterioration from heat and age
  • Poor hose routing caused by an incorrect replacement part
  • Cooling system service on Volkswagen Passat and Audi A4 lower hose applications

Installation Notes and Tips

Inspect the mating pipes, clamps, and nearby cooling system components before installation. Confirm the hose routing matches the original lower hose layout and verify the inside diameters against the vehicle connection points before final assembly. The thermoplastic quick-connect features referenced by the manufacturer should be matched carefully to the OE-style connection design.

Quality Assurance

Rein Automotive positions this hose as an OE-quality replacement for European vehicles, with dimensions and connector details modeled after the original part. This part cross-references Volkswagen/Audi OE number 4B0121055J for the same application.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2005VolkswagenPassat1.8LL4Lower—
2004VolkswagenPassat1.8LL4Lower—
2003VolkswagenPassat1.8LL4Lower—
2002VolkswagenPassat1.8LL4Lower—
2001AudiA41.8LL4Lower—
2001AudiA4 Quattro1.8LL4Lower—
2001VolkswagenPassat1.8LL4Lower—
2000VolkswagenPassat1.8LL4Lower—
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
4B0121055J