Audi A8 D4 4H Fuel Filler Flap Locking Motor Actuator 4H0810773F

Audi A8 D4 4H Fuel Filler Flap Locking Motor Actuator is an original component from the Fuel filler flaps and accessories group, responsible for the precise locking and unlocking of the fuel flap during refueling. It ensures the fuel filler is securely closed, supporting the protection of the fuel system and the daily comfort of operating the luxury Audi A8 sedan.

Specifications and technical data

• SKU: 4H0810773F
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0810773F
• Substitutable numbers: 4H0810773F, 4H0 810 773 F
• Category: Fuel Flaps & Components

Purpose and function in the fuel system

The presented Audi A8 D4 4H Fuel Filler Flap Locking Motor Actuator operates as an electrically controlled actuator that works in conjunction with the vehicle's central locking system. Its task is to mechanically lock or release the fuel filler flap when the car is locked or unlocked, which limits the risk of unauthorized access to the filler and helps maintain proper operating conditions for the fuel tank.

Thanks to the use of an OEM solution, the actuator maintains the correct mounting geometry and operating stroke, which translates into stable operation of the flap mechanism, no play, and proper closing under various operating conditions.

Construction and advantages of the original Audi solution

The actuator is a compact module integrated with an electric drive and a locking mechanism, adapted for operation in the wheel arch area and the vicinity of the fuel filler. The original Audi design ensures:

• fitment to the factory mounting points in the A8 D4 body,
• proper cooperation with the rod or pin that locks the flap,
• compatibility with the factory electrical installation and central locking logic.

Choosing an original fuel filler flap actuator minimizes the risk of installation problems, eliminates the need for wiring modifications, and allows for maintaining the consistency of the filler security system with other body components.

Condition, verification, and service application

The item is offered as a used part, which is a cost-effective solution while maintaining the manufacturer's factory specifications. This type of actuator is suitable both for typical repairs after a locking mechanism failure and for removing the effects of damage in the fuel filler area (e.g., after a collision or external interference).

Thanks to the preservation of the original design, it is possible to quickly restore the full functionality of the fuel filler flap without interfering with the comfort electronics or control modules. This is a practical solution for workshops specializing in the Audi brand and users who expect consistency with the vehicle's factory standard.

Comfort of use and operational safety

A functional fuel filler flap locking motor actuator affects the daily comfort of operating the vehicle – the flap opens and closes in accordance with the central locking system, without the need for additional actions by the driver. At the same time, a properly working locking mechanism supports the protection of the fuel system against third-party access and reduces the risk of flap damage resulting from incomplete closing.

Replacing a worn or jammed actuator with a functional OEM element is recommended in situations where there are problems with opening the flap at a gas station, no response to the signal from the central locking, or unstable locking.

Technical support and related components

In the case of service work in the fuel filler area, it is worth paying attention to the condition of the flap itself, the hinge, seals, and guide elements to ensure long-term and trouble-free operation of the entire assembly. For Audi users who are planning a wider range of work in this body area, other elements from the Fuel filler flaps and accessories group may also be useful.

If you are planning a comprehensive repair or upgrade of the fuel filler zone in your Audi and need other elements from the same group, such as flaps, hinges, or seals, check the available parts in the Audi fuel filler flaps and accessories category.

To better understand the importance of a properly functioning filler and tank security in the context of the entire fuel supply system, it is worth reading the guide describing the diagnostics and operation of fuel supply components: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.