Rein 5K0-122-157K Heater Hose Assembly Coolant Hose

The Rein 5K0-122-157K is a direct-fit heater hose assembly engineered as an OE-equivalent replacement for Volkswagen and Audi Group vehicles. Designed to restore proper coolant flow between the engine and heater core, this hose assembly helps maintain efficient cabin heating and engine thermal management.

Rein Automotive manufactures this hose to meet or exceed original equipment specifications, using quality rubber compounds that resist heat, pressure, and coolant degradation over time. The result is a reliable, long-lasting replacement that installs with the same fit and routing as the factory original.

Key Features:

• Direct OEM replacement — matches factory part number 5K0-122-157K (also referenced as 5K0122157K)
• Engineered to OE specifications for proper fit and function
• Constructed from heat- and coolant-resistant rubber compounds
• Maintains factory coolant flow routing for efficient heater core performance
• No modification required for installation

Rein is a trusted name in European automotive replacement parts, supplying hoses, belts, and other components that meet the rigorous demands of VW, Audi, Seat, and Škoda platforms. This heater hose assembly is a straightforward, quality solution for restoring your vehicle's cooling and heating system integrity.