Genuine OEM Audi Coolant Hose, part number 1K0122157CM. This hose carries coolant between various engine components, such as the radiator, engine block, and heater core, to maintain optimal engine operating temperature. It is a multi-branched hose designed for specific routing within the engine cooling system. Weighing 0.277 kg and measuring 0.31 m in length, this hose is constructed from durable, heat-resistant rubber. Choosing a genuine OEM coolant hose ensures correct dimensions, material composition, and resistance to temperature and pressure fluctuations, preventing leaks and maintaining efficient engine cooling.