Genuine OEM Audi Engine Ventilation Line, part number 059103209N. This line allows for the proper circulation of air within the engine, playing a critical role in crankcase ventilation and emission system function. It is positioned on the engine assembly, connecting various components for air flow. Weighing 0.18 kg and measuring 0.205m in length, this line is designed for precise fitment. Using a genuine OEM ventilation line ensures correct routing, material integrity, and optimal engine breathing, preventing oil leaks or performance issues.