Genuine OEM Volkswagen Heater Coolant Hose, part number 4M0265347S. This hose circulates coolant to the vehicle's heater core for cabin warmth. It connects various components within the engine's cooling system to facilitate heat transfer to the cabin. Constructed from durable, heat-resistant rubber to withstand engine temperatures and pressures. Genuine OEM hoses are designed for precise fitment and optimal coolant flow, ensuring reliable cabin heating.