Genuine OEM Audi Evaporative Emissions Line, part number 8K0201997Q. This line plays a critical role in the vehicle's emission control system by connecting the fuel tank to the charcoal canister, managing and containing fuel vapors. It is positioned as part of the evaporative emissions (EVAP) system, typically running along the underbody near the fuel tank. Measuring approximately 0.91 meters in length and weighing 0.043 kg, this line is designed for precise routing and vapor containment. Choosing a genuine OEM line ensures proper sealing, resistance to fuel vapors, and correct connection points, which are vital for maintaining emissions compliance and preventing fuel system leaks.