Genuine OEM Audi Coolant Hose, part number 2Q0122101CT. This hose is a critical component of the engine cooling system, responsible for circulating coolant between various parts like the radiator, engine block, and heater core to maintain optimal operating temperatures. It is designed with specific bends and connections for precise routing within the cooling system. Measuring approximately 0.49m in length and weighing 0.351 kg, it is made from durable, heat-resistant rubber compounds. Using a genuine OEM coolant hose ensures correct material composition, pressure resistance, and exact fitment, preventing leaks and premature failure that could lead to engine overheating.