Genuine OEM Audi Engine Vent Hose, part number 8W0121107P. This hose provides a critical pathway for engine ventilation, managing crankcase pressure and preventing oil leaks. It is located within the engine bay, connecting components of the ventilation system. Constructed from durable rubber with a protective textile sleeve, it measures approximately 10.5 cm in length. Using a genuine OEM hose ensures precise fitment and material integrity, crucial for maintaining engine health and preventing vacuum leaks.