Genuine OEM Audi Engine Vacuum Line, part number 4N0131051D. This line transmits vacuum pressure for various engine functions, playing a critical role in the operation of vacuum-actuated systems. It is an integral part of the engine's vacuum network. Weighing 0.064 kg and measuring 0.545 meters in length, this line is designed for precise routing. Choosing a genuine OEM vacuum line ensures correct material composition and precise fitment, preventing leaks and maintaining optimal system pressure for reliable engine performance.