Genuine OEM Volkswagen Coolant Return Hose, part number 7E0122051AF. This vital hose is responsible for circulating cooled fluid from the radiator back into the engine, playing a crucial role in temperature regulation. It is an integral part of the engine cooling system, ensuring efficient heat transfer and preventing engine overheating. Constructed from durable, heat-resistant rubber with integrated plastic fittings, it measures approximately 33cm in length and weighs 0.396 kg. Opting for a genuine OEM coolant hose guarantees the correct material composition, precise routing geometry, and resistance to engine fluids and temperatures for long-term reliability.