Genuine OEM Audi Coolant Pipe, part number 057121071AN. This pipe is a critical component in the engine cooling system, responsible for transporting coolant between various components to maintain optimal engine operating temperatures. It is a curved pipe, approximately 0.52 meters in length and weighing 0.427 kg. Choosing a genuine OEM coolant pipe ensures the correct routing geometry, material composition, and pressure resistance for reliable, leak-free operation.