Genuine OEM Audi Lower Engine Coolant Pipe, part number 8V0121071B. This pipe is designed to carry coolant to or from the lower part of the engine, playing a vital role in maintaining optimal operating temperatures. It is a rigid metal pipe, approximately 0.42 meters in length and weighing 0.369 kg. Choosing a genuine OEM coolant pipe ensures precise fitment, correct routing geometry, and resistance to thermal and chemical stresses, preventing leaks and maintaining cooling system integrity.