Genuine OEM Audi Intake Manifold Vent Hose, part number 059103221BN. This critical component is responsible for venting gases from the intake manifold, playing a vital role in the engine's emissions control and pressure regulation systems. It connects various points within the intake system to manage crankcase ventilation. Weighing 0.054 kg and measuring 0.205m in length, it features specific connectors for a secure fit. Using a genuine OEM hose ensures correct routing, material resistance to oil and heat, and a leak-free connection, which is essential for maintaining engine efficiency and preventing vacuum leaks.