Genuine OEM Audi Coolant Hose with Coupling, part number 4G0122101AJ. This hose is an integral part of the engine cooling system, specifically designed to transport coolant to and from the radiator. It features an integrated coupling for a secure and leak-proof connection, ensuring efficient heat exchange and temperature regulation. Weighing 0.2754 kg, it is built to withstand the demanding conditions of the engine bay. Using a genuine OEM coolant hose guarantees the correct material composition, flexibility, and precise fitment to prevent leaks and maintain optimal engine operating temperatures.