Genuine OEM Audi Coolant Hose With Coupling, part number 4K0122060. This hose is a vital component of the engine cooling system, responsible for transporting coolant between engine components and the radiator. It connects directly to the radiator. This hose measures 0.26 meters in length. Using a genuine OEM coolant hose ensures proper routing geometry, resistance to engine fluids, and reliable performance under varying temperatures and pressures.