Genuine OEM Audi Engine Coolant Hose, part number 2Q0122051. This hose is a vital part of the engine cooling system, responsible for transporting coolant between the radiator and other engine components. It connects to the lower section of the radiator. Weighing 0.44 kg, this hose is designed for precise fitment and long-term durability. Choosing a genuine OEM coolant hose ensures correct material composition, resistance to high temperatures and pressures, and accurate routing geometry, preventing leaks and maintaining system integrity.