Genuine OEM Audi Coolant Hose, part number 6C0122101E. This hose plays a critical role in the engine cooling system by transporting coolant between the engine and the radiator, facilitating heat exchange. It is specifically designed to connect to the radiator assembly. Weighing approximately 0.812 kg, it measures 0.51m in length, 0.35m in width, and 0.17m in height. Using genuine OEM coolant hoses ensures the correct material composition, pressure rating, and precise routing geometry, which are crucial for preventing leaks and maintaining the integrity of the cooling system.