Genuine OEM Audi Engine Vent Hose, part number 06H103221J. This hose is responsible for allowing the ventilation of engine gases, which is vital for regulating crankcase pressure and preventing potential damage to engine seals. Weighing approximately 0.045 kg, it is a lightweight component. Selecting a genuine OEM hose ensures the correct routing, material resistance to engine fluids and temperatures, and reliable long-term performance of the engine's ventilation system.