Genuine OEM Volkswagen Fuel Tank Flap Housing, part number 5NN809857B. This component is crucial for protecting the fuel filler opening and securely housing the fuel filler cap, preventing contamination and fuel evaporation. It integrates into the vehicle's body panel around the fuel tank access. Made from durable plastic with integrated seals, it measures approximately 0.31m in length. Choosing a genuine OEM housing ensures a perfect fit, proper sealing, and long-term resistance to fuel and environmental elements, maintaining the integrity of the fuel system.