Genuine OEM Audi Fuel Filler Insert, part number 8W0809906C. This insert forms the inner housing of the fuel filler neck, providing a secure and sealed opening for fuel delivery. It is located behind the fuel flap, where the fuel cap is attached. Weighing approximately 0.47 kg, this component is made from durable plastic. Choosing a genuine OEM fuel filler insert ensures an exact fit, proper sealing, and compatibility with the fuel system, preventing leaks and maintaining fuel integrity.