Genuine OEM Volkswagen Engine Vent Hose, part number 3Q0122447J. This hose plays a critical role in the engine system by providing necessary ventilation, which helps manage pressure and prevent the buildup of harmful gases. It is integrated into the engine's complex network of lines. Weighing only 0.017 kg and measuring 0.112m in length, this hose is designed for precise fitment and durability. Using a genuine OEM vent hose ensures correct material composition and resistance to engine fluids and temperatures, maintaining system integrity and preventing vacuum leaks or blockages.