Genuine OEM Audi Fuel Filler Neck Insert, part number 83F809906. This essential component is located within the fuel filler housing and is designed to precisely guide the fuel nozzle into the fuel tank opening. It ensures a secure and spill-free refueling process, preventing damage to the fuel system. Weighing 0.415 kg, this genuine OEM insert provides exact dimensions and material quality for reliable long-term performance and proper sealing.