Rein 1K0-122-073 FS HVAC Heater Hose Outlet - VW Audi Coolant Hose

The Rein 1K0-122-073 FS is an OE-quality HVAC heater hose outlet designed as a direct replacement for Volkswagen and Audi vehicles. This coolant hose connects the oil cooler to the coolant pipe and coolant tube that feeds the heater core, playing a critical role in transferring engine heat to the cabin heating system.

Rein Automotive is part of the CRP family of brands and has been a trusted name in OE-quality European automotive replacement parts since 2007. The name "Rein" is the German word for "pure" — a reflection of the brand's commitment to precision manufacturing and quality standards.

Key Features:

• Direct OE replacement — matches the original hose in size, shape, and branch configuration
• Includes thermoplastic quick-connect fittings where specified by the original manufacturer
• Manufactured to the same tolerances as the factory part for a precise, leak-free fit
• Built to withstand the temperature extremes and pressure demands of modern cooling systems
• OEM part number cross-reference: 1K0-122-073-FS (also referenced as 1K0122073FS)
• Sold individually (quantity: 1)

HVAC heater hoses transfer engine coolant from the main cooling system to the heater core, where cabin air is warmed before being routed through the vehicle's vents. A cracked, leaking, or deteriorated heater hose can result in coolant loss, loss of cabin heat, and potential engine overheating. Inspect heater hoses regularly for cracks, soft spots, or signs of deformation, and replace at the first sign of wear.