Genuine OEM Audi Fuel Tank, part number 5WA201060Q. This fuel tank is designed with a narrow filler neck measuring 22mm, specifically for unleaded petrol. It serves as the primary reservoir for the vehicle's fuel system. The tank is located in the underbody of the vehicle. Genuine OEM fuel tanks are constructed from high-quality materials to prevent leaks and ensure long-term durability, maintaining the integrity of the fuel system.