Genuine OEM Audi Fuel Filler Insert, part number 8T0809906C. This component functions as the inner housing for the fuel filler assembly, providing a protective and sealed environment for the fuel tank opening. It helps prevent the ingress of dirt and moisture into the fuel system. Made from durable black plastic, it weighs approximately 0.482 kg. Opting for a genuine OEM insert ensures precise fitment, proper sealing, and reliable long-term performance, crucial for maintaining fuel system integrity.