Genuine OEM Volkswagen Engine Vent Hose, part number 03C103493AL. This hose is a vital component in the engine's crankcase ventilation system, designed to allow for the controlled ventilation of engine gases. It connects to the PCV valve assembly, ensuring proper pressure regulation and preventing harmful build-up. Weighing approximately 0.052 kg and measuring 0.08m in length, this hose is engineered for precise fitment and resistance to oil and heat. Using a genuine OEM hose ensures the correct material composition and routing geometry, preventing leaks and maintaining optimal engine performance and emissions control.