Genuine OEM Audi Engine Coolant Pipe, part number 4KR121081E. This pipe is a vital component of the engine cooling system, responsible for transporting coolant to maintain optimal engine operating temperatures. It is positioned within the complex network of cooling lines, ensuring proper fluid circulation. Weighing 0.038 kg and measuring approximately 0.55 m in length, a genuine OEM coolant pipe ensures precise dimensions, durable material construction, and proper sealing surfaces, which are vital for preventing leaks and maintaining the integrity of the cooling system.