Genuine OEM Audi Coolant Hose, part number 5N0122051BG. This hose is a vital component of the engine cooling system, responsible for transporting coolant between various engine components and the radiator. It ensures efficient heat dissipation and maintains optimal engine operating temperature. Measuring 0.285m in length and weighing 0.277 kg, this genuine OEM hose provides the correct routing geometry and material resistance for reliable coolant flow and long-term durability.