OUTER FUEL CAP 4F5809907C
Withdrawn from: AUDI A6 C6 AVANT (4F5) 2.0 TDI
More than just a simple cover — replace your car's exterior fuel cap cover with one of our replacement parts!
This part is also known as the fuel filler flap or fuel door, and is a visible panel that integrates into the body of the vehicle. It serves to protect and conceal access to the fuel cap and filler neck, while also contributing to the car's aesthetics and, in many cases, its security. It is designed to open and close smoothly, ensuring the fuel system is well protected from external elements and any unwanted interference.
Frequently asked questions
Its main function is to protect and conceal the fuel filler neck and the internal fuel cap. In other words, it acts as a physical barrier against dirt, dust, water, and acts of vandalism or fuel theft. Since it is integrated into the bodywork, it has no impact on the vehicle's overall appearance.
It depends on the vehicle model:
- The most common method is by pressing a button inside the cabin, located near the driver's seat, the dashboard, or the door.
- On older models, it was opened using a key.
- On some models, a light press on a specific point of the cover is enough to release it.
- In the trunk, there is a cable or pull handle to open it in the event of an electrical failure.
No, they are not the same. The exterior cover is the visible "door" on the bodywork that provides access, while the fuel cap is an internal component that seals the filler neck, preventing spills and vapor leaks. In other words, the exterior cover is the protective housing, and the fuel cap is the element that seals the fuel system.
As a general rule, the most common issues are a failure in the opening mechanism or a faulty lock caused by the electric actuator. Over time, or as a result of impacts or knocks, it may suffer deformation or cosmetic damage, or the hinges may break. It is also possible for the release support to fail, where the cover does not open when the latch is released.
Absolutely — in fact, it is a fairly straightforward part to replace, although it does involve removing part of the trunk's interior lining or the wheel arch to access the mechanism. That said, if you have the right tools and a bit of time, you can carry out the replacement yourself.
Very little, actually — it's enough to clean the area to prevent dirt or debris from blocking the opening mechanism, and to lubricate it occasionally so the hinges don't rust.
It's true that the tank has the inner fuel cap as a second line of defense. However, if the exterior cap doesn't close properly, it makes it easy for thieves to steal your fuel. It also acts as a protective barrier, preventing the filler neck from being exposed to dust, water, and other contaminants. On top of that, a cap that doesn't sit flush will detract from the overall appearance of your vehicle.
The most important thing to bear in mind is that this part is not universal — fuel caps are specific to each make, model, and often the manufacturing year of the vehicle. The shape, color, hinge design, and opening/closing mechanism all vary from car to car. So you need to buy one that matches your exact model. We can help you find the right one easily in our catalogue, as we stock parts for a huge range of models. Just get in touch through the contact form and we'll track it down for you!