Genuine OEM Audi Coolant Radiator Hose Assembly, part number 7L0122101L. This complex hose assembly is responsible for circulating engine coolant between the engine block and the radiator, playing a critical role in regulating engine temperature. It is an integral part of the engine cooling system. Weighing approximately 1.26 kg, this assembly is made from high-quality, heat-resistant rubber. Selecting a genuine OEM hose ensures the correct routing geometry, material resistance to heat and pressure, and secure connections, preventing leaks and maintaining efficient engine cooling.