Mercedes W163 Fuel Filler Flap Motor Actuator Electric A1638204942

Mercedes W163 Fuel Filler Flap Motor Actuator Electric is a precision component from the Fuel filler flaps and accessories category, responsible for securely locking and unlocking the fuel filler flap. The electric actuator control ensures convenient operation of the refueling system and stable integration with the vehicle's electrical installation. This solution helps maintain proper protection of the fuel filler and preserves the functionality of the factory locking system.

Specifications and technical data

• SKU: A1638204942
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1638204942
• Substitutable numbers: A1638204942, A 163 820 49 42
• Part type: Fuel Door Lock
• Category: Fuel Flaps & Components

Purpose and function of the actuator

The fuel filler flap actuator in the Mercedes W163 model is responsible for mechanical locking and unlocking of the flap in response to an electrical signal from the vehicle's system. This component works in conjunction with the central locking system, ensuring that access to the fuel filler is controlled and synchronized with the other body locks. A properly functioning actuator reduces the risk of flap damage, leaks, and unauthorized access to the fuel filler.

Construction and integration with the vehicle system

The solution used in the Mercedes W163 is based on a compact electric actuator that transfers movement to the pin locking the flap. The design is prepared for operation in a body area exposed to temperature changes and humidity, which requires appropriate mechanical resistance. The component is designed to work with the factory wiring harness and the original mounting near the fuel filler, which facilitates installation and subsequent maintenance.

Benefits of using an original actuator

Using a dedicated actuator in the Mercedes W163 allows for maintaining consistent operation of the central locking system and proper fitment to the fuel filler flap. The appropriate geometry of the component minimizes stress during operation, which translates into stable locking and reduced mechanical wear. Maintaining a functional actuator is important not only for user comfort but also for protecting the fuel system from external contaminants.

Condition and service application

The offered item is in used condition, making it an attractive service solution for users looking for parts with a favorable price-to-functionality ratio. This type of component is suitable for maintenance repairs when the factory actuator stops locking the flap correctly or responding to signals from the electrical system. Replacing it with a functional unit allows for restoring full system functionality without the need to interfere with other system elements.

Matching by part numbers and technical support

The actuator belongs to a group of parts identified by OEM numbers and interchangeable numbers, which facilitates the selection of the correct component for a specific Mercedes W163 configuration. When selecting, it is recommended to compare the markings with the vehicle documentation or the existing part to ensure full mechanical and electrical compatibility. This makes the installation process smoother and reduces the risk of issues with the fuel filler flap operation.

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

To better understand the importance of a properly functioning fuel filler in the context of the entire fuel supply path, it is worth consulting a guide on diagnostics and operation of the fuel system – a detailed discussion can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration".