Genuine OEM Volkswagen Coolant Hose, part number 5QF122157AJ. This essential hose is responsible for transporting engine coolant, facilitating heat exchange and maintaining optimal engine operating temperatures. It is an integral part of the engine cooling system. Made from durable, heat-resistant rubber, it weighs approximately 0.11 kg. Using a genuine OEM coolant hose ensures the correct material composition, internal diameter, and molded bends for leak-free operation and resistance to thermal cycling and chemical degradation.