Genuine OEM Audi Vent Hose, part number 079201994E. This hose plays a crucial role in the engine's ventilation system, facilitating the controlled release of gases or vapors to maintain optimal engine operation and emissions compliance. The diagram shows it connected in the upper engine area, likely for crankcase or fuel vapor ventilation. Weighing approximately 0.15 kg and measuring around 0.55 meters in length, it is made from materials resistant to fuel and oil vapors. Choosing a genuine OEM vent hose ensures the correct material flexibility, internal diameter, and resistance to chemical degradation, which are essential for preventing leaks and maintaining system integrity over time.