Rein CHR0392 Radiator Coolant Hose - Upper

OE-Style Upper Radiator Hose for Audi A6

Rein CHR0392 is a standard replacement radiator coolant hose built for European vehicle cooling systems. It is made from EPDM and finished in black, with the size, shape, and branch layout matched to the original hose assembly for direct replacement service.

Compatible with 1998-2001 Audi A6, upper and 1998-2001 Audi A6 Quattro, upper, this hose supports the cooling circuit on applications that use the OE-style upper radiator routing. Rein CHR0392 is also a direct cross-reference for Genuine 4B0121101N and interchanges with 4B0121101D.

Key Features

• EPDM construction for radiator coolant service
• Black finish for OE-style appearance
• Standard replacement grade
• Direct replacement for the original hose assembly
• Formed to match OE size, branch shape, and routing
• Thermoplastic quick-connect fittings follow the original design

Detailed Description

Rein CHR0392 radiator coolant hose is engineered for 1998-2001 Audi A6 and 1998-2001 Audi A6 Quattro upper hose applications. The hose is built to mirror the original equipment layout, helping maintain proper coolant flow and a factory-style fit in the engine bay. Its EPDM material is commonly used in cooling-system service because it is suited to heat and coolant exposure, while the black finish keeps the installation visually consistent with OE components.

This part number, CHR0392, is a practical choice when replacing a worn, cracked, or leaking upper radiator hose on Audi A6 and Audi A6 Quattro models from 1998 through 2001. It is designed as a direct OE-style replacement rather than a universal hose, which helps reduce fitment issues during service.

What It Helps Fix

• Coolant leaks from a split or aged upper radiator hose
• Softening, swelling, or cracking in the hose body
• Loss of coolant flow caused by hose deterioration
• Fitment problems from non-OE hose routing
• Cooling-system service needs on Audi A6 upper hose applications

Installation Notes and Tips

Verify the vehicle is a 1998-2001 Audi A6 or Audi A6 Quattro with an upper hose application before ordering. Inspect the mating connections, clamps, and nearby cooling components for wear before installation. Drain coolant as needed, transfer the hose along the original routing, and confirm the quick-connect fittings seat fully before refilling and bleeding the system.

Quality Assurance

Rein manufactures OE-quality cooling hoses for European vehicles, with replacement parts shaped to follow the original manufacturer’s dimensions and connection style. CHR0392 is built to OE-style standards for direct replacement service.