BMW F30 F80 M3 Fuel Cover Fill In Flap Cap Mineralgrau Grey Metallic B39

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F30 F80 M3 Fuel Cover Fill In Flap Cap Mineralgrau Grey Metallic B39 is an original body component from the Fuel filler covers and accessories group, designed for installation in the rear section of BMW F30 and F80 M3 series vehicles. Finished in the factory Mineral Grau Metallic - B39 color, this fuel flap helps maintain the visual consistency of the bodywork and restores aesthetics following damage or a collision.

Specifications and technical data

• SKU: 2239979-MG
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2239979
• Substitutable numbers: 41002239979, 2239979
• Location on the vehicle: Rear
• Color: Mineral Grau Metallic - B39
• Category: Fuel Flaps & Components

Purpose and function of the fuel filler flap

The fuel filler flap in BMW F30 and F80 M3 models is responsible for shielding the fuel filler neck from contaminants, moisture, and mechanical damage. A properly selected component ensures:

• precise fitment to the body lines,
• stable closing and proper operation of the opening mechanism,
• protection of the fuel filler area against dirt and corrosion.

In the event of damage to the factory flap, replacing it with an original component from the same production series allows for maintaining the correct geometry and alignment with the fender and bumper.

Mineral Grau Metallic - B39 color and visual matching

The applied Mineral Grau Metallic - B39 paint is a factory shade used on many BMW F30 and F80 M3 units. Choosing a flap in this color reduces the need for additional painting, which speeds up repairs and lowers costs. When correctly matched to the body color, you can achieve:

• a consistent shade with adjacent body panels,
• aesthetic transitions between painted elements,
• preservation of the vehicle's original visual character.

This solution is particularly beneficial for spot repairs when the goal is to quickly restore the car's appearance without full repainting of the side panels.

Vehicle placement and installation aspects

The flap is intended for installation in the rear part of the body, in the fuel filler area. Thanks to the factory geometry and the retention of original mounting points, the installation process is straightforward, ensuring:

• proper operating clearance relative to the fender,
• correct positioning relative to the filler housing,
• compatibility with the standard opening and closing mechanism.

The item comes from disassembly, meaning it is a used part, yet still functional, allowing for an economical repair while maintaining the manufacturer's original specifications.

Benefits of using an original BMW flap

Using an original fuel filler flap in Mineral Grau Metallic offers a range of practical benefits:

• factory fitment to the body without the need for modifications,
• preservation of the original styling lines of the F30 and F80 M3 models,
• possibility of quick replacement of a damaged element without interfering with the body structure.

For users who care about the visual condition of their car and for body shops, this solution allows for a precise, predictable repair in accordance with the manufacturer's guidelines.

BMW fuel filler covers – expansion and service of the fuel zone

If you are planning a comprehensive repair or upgrade of the fuel zone in your BMW and need other components from the same group, such as additional flaps, covers, or accessory protection elements, check out the available parts in the BMW fuel filler covers and accessories category.

To better understand the importance of a properly secured fuel filler and the impact of this area on vehicle operation, it is worth checking out our technical guide on fuel system diagnostics and maintenance: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.