Rein CHR0057R Radiator Coolant Hose - Upper

OE Quality Upper Radiator Hose

Rein CHR0057R is an OE-quality radiator coolant hose built for European applications that require a direct-fit replacement. It is shaped to match the original hose layout and uses thermoplastic quick connect fittings to simplify service on the cooling system.

Compatible with 1997-2001 Audi A4, upper; 1997-2001 Audi A4 Quattro, upper; and 1998-2005 Volkswagen Passat, upper. The CHR0057R is designed for clean installation and dependable sealing in demanding under-hood conditions.

Key Features

• Direct replacement for the original upper radiator hose assembly
• Thermoplastic quick connect fitting included for OE-style connection points
• EPDM hose construction resists heat, salt, road debris, oil, and other contaminants
• Helps reduce installation time by matching OE size and shape
• Built to DIN 73411 industry standards
• Maximum working pressure: 145 psi

Detailed Description

Rein CHR0057R is engineered as a complete OE-quality direct-fit European hose for cooling-system service. Its application-specific design follows the original hose routing and branch geometry, helping maintain proper fit on the Audi A4, Audi A4 Quattro, and Volkswagen Passat upper hose location. The hose measures 10.5 inches centerline length and uses matching 1.22-inch inside diameter ends with 1.46-inch outside diameter ends for OE-style connection.

This part cross-references Volkswagen/Audi OE number 8D0121101K for the same application. The CHR0057R is a practical choice when replacing a worn, cracked, or leaking upper radiator coolant hose on a 1997-2001 Audi A4 or A4 Quattro, or a 1998-2005 Volkswagen Passat.

What It Helps Fix

• Coolant leaks from aged or damaged hose material
• Loose or unreliable quick-connect sealing surfaces
• Heat-related hose softening, cracking, or swelling
• Service delays caused by trimming or refitting an incorrect hose
• Repeat cooling-system comebacks from reusing worn connectors or O-rings

Installation Notes and Tips

Install as a direct-fit replacement on the upper radiator hose position. No cutting, refitting, or adjusting of the hose is required when used on the listed applications. Inspect mating surfaces, quick connectors, and sealing points before installation to help ensure a proper seal and stable cooling-system performance.

Quality Assurance

Rein designs this hose as an OE-quality replacement for European vehicles, with fit and connector style matched to the original configuration. Part number CHR0057R includes a 24-month or 24,000-mile warranty.