Genuine OEM Audi Engine Vent Hose, part number 059103221BP. This essential hose facilitates the escape of gases from the engine crankcase, preventing pressure buildup and ensuring proper engine ventilation. It connects specific engine components within the ventilation system. Constructed from durable, curved, and heat-resistant material, it weighs approximately 0.055 kg and measures 0.24m in length. Using a genuine OEM vent hose ensures the correct diameter, flexibility, and resistance to oil and heat, which are crucial for maintaining engine health and preventing oil leaks or performance issues.