Genuine OEM Volkswagen Coolant Hose With Heater Valve, part number 7P6122157J. This hose manages coolant circulation to both the engine and the cabin heater, featuring an integrated valve for precise control. It is essential for maintaining both engine operating temperature and passenger cabin comfort. The integrated valve ensures accurate regulation of heat transfer. Genuine OEM parts provide the exact specifications for the valve and hose, ensuring optimal system function and durability.