Genuine OEM Audi Engine Coolant Pipe, part number 057121075AK. This pipe is an integral part of the engine cooling system, responsible for routing coolant to various engine components, including those near the turbochargers, to maintain optimal operating temperatures. It is a rigid pipe, weighing approximately 0.361 kg and measuring about 0.39 meters in length. Choosing a genuine OEM pipe ensures precise fitment, correct material composition, and resistance to high temperatures and pressures for long-term reliability.