Genuine OEM Volkswagen Coolant Pipe, part number 3WB816738A. This pipe transports coolant between the engine and the inner heat exchanger to regulate cabin temperature. It is located in the engine cooling system. Manufactured from durable materials to withstand engine operating temperatures and pressures, ensuring a long service life. Genuine OEM parts are designed for exact fitment and optimal performance, maintaining the integrity of your vehicle's cooling system.