Genuine OEM Audi Evaporative Emissions System Breather Line, part number 8R0201991E. This essential component is responsible for safely routing fuel tank vapors to the evaporative emissions control system, preventing their release into the atmosphere. The line ensures proper ventilation of the fuel tank while capturing harmful hydrocarbons for processing. Measuring approximately 1.21 meters in length, this line is designed for specific routing within the vehicle's underbody. Opting for a genuine OEM breather line guarantees the correct material composition, resistance to fuel and environmental factors, and precise connections for a leak-free and compliant emissions system.