Genuine OEM Volkswagen Coolant Hose, part number 3D0819362. This hose is a critical component of the vehicle's heating and air conditioning system, responsible for circulating coolant to the heater core. It is typically located in the engine bay, connecting various parts of the coolant circuit. Constructed from high-quality, heat-resistant rubber to ensure longevity and prevent leaks. Genuine OEM parts are designed for precise fitment and optimal coolant flow, ensuring efficient cabin heating.