Mercedes Vito W639 Fuel Filler Flap Cover Trim A6397540034 Brilliant Silver 9744

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes Vito W639 Fuel Filler Flap Cover Trim Brilliant Silver is an original body component from the Fuel filler flaps and accessories group, designed for Mercedes W639 series models. Finished in the Brilliant Silver Metallic - 9744 shade, this flap helps maintain the color consistency of the bodywork and restores the factory appearance of the fuel filler area following damage or corrosion.

Specifications and technical data

• SKU: A6397500304-BRS
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397500304
• Substitutable numbers: A6397500304, A 639 750 03 04, A6397540034, A 639 754 00 34
• Color: Brilliant Silver Metallic - 9744
• Category: Fuel Flaps & Components

Purpose and function of the fuel filler flap

The fuel filler flap on a Mercedes W639 is responsible for shielding the fuel cap and filler neck from contaminants, moisture, and mechanical damage. A properly selected component from this group ensures:

• protection of the fuel system against dust, mud, and water,
• stable closure of the fuel filler area,
• an aesthetic finish for the side of the vehicle body.

In the event of damage to the factory flap, using an original component from the same model series ensures proper fitment with the bodywork and correct operation of the opening mechanism.

Brilliant Silver Metallic - 9744 color

The applied Brilliant Silver Metallic - 9744 color is a popular metallic silver shade used on many Mercedes W639 units. As a result, the flap serves as a visually matched body component, which reduces the need for additional painting or allows it to be simplified to minimal touch-ups. The metallic coating gives the body a clean, modern character and harmonizes well with other body elements in the same color.

Characteristics of the original Mercedes component

The offered flap comes from the Mercedes manufacturer line, which means it maintains factory mounting parameters and compatibility with the W639 body structure. Original Fuel filler flaps and accessories from this brand are designed with consideration for:

• precise fitment with body contours,
• appropriate rigidity and resistance to typical operational loads,
• compatibility with the standard opening and closing mechanism.

This used component allows for an economical repair while maintaining a construction consistent with the factory design, which is particularly important for post-accident repairs or localized body restoration.

Why it is worth using this flap in a Mercedes W639

Using an original fuel filler flap in the correct color offers several practical benefits:

• reduction of paintwork requirements due to the shade matching the vehicle body,
• preservation of the vehicle's consistent side profile without visible differences in shape or geometry,
• easier installation thanks to factory mounting points and the correct geometry of the element.

This solution is particularly advantageous for local repairs, where both proper fuel system protection and vehicle aesthetics consistent with the original manufacturer design are important.

Related components and knowledge about the fuel system

When replacing the flap, it is worth paying attention to the general condition of the fuel filler area, including seals, the cap, and surrounding body elements. For a better understanding of how the entire fuel system works – from the filler, through the tank, to the injectors and pumps – the following guide will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. It allows for better planning of diagnostics and selecting the right components based on manufacturer markings.

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 covers, hinges, or additional mounting hardware, check out the available parts in the Mercedes fuel filler flaps and accessories category.