BMW F34 GT Fuel Cover Fill-in Flap Filler Cover Mineralgrau Grey - B39 7278405

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F34 GT Fuel Cover Fill-in Flap Filler Cover Mineralgrau Grey is an original body component designed for the rear section of the vehicle, ensuring a consistent look with the factory Mineral Grau Metallic - B39 paint. Maintaining color and geometry compatibility with the BMW body line allows for an aesthetically and technically correct replacement of a damaged fuel filler flap. This is a practical solution for users who want to preserve the factory character of their BMW F34 Gran Turismo series.

Specifications and technical data

• SKU: 7278405-MG
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7278405
• Substitutable numbers: 7278405, 51177278405
• Location on the vehicle: Rear
• Fuel type: Petrol, Diesel
• Color: Mineral Grau Metallic - B39
• Category: Fuel Flaps & Components

Purpose and fitment for BMW F34 GT

The presented fuel filler flap has been designed specifically for the BMW F34 Gran Turismo body, taking into account the characteristic line of the rear part of the vehicle. Its placement in the rear area of the body guarantees proper fitment with the fender panel and the fuel filler mechanism, which translates into stable mounting and correct operation of the hinge and lock.

The component belongs to the Fuel filler covers and accessories group, making it a functional addition to the refueling system, regardless of the type of fuel used in the vehicle. The flap construction is prepared to work with the factory opening and closing mechanism, which facilitates installation and reduces the need for additional modifications.

Mineral Grau Metallic - B39 color and aesthetic values

The factory Mineral Grau Metallic - B39 color allows for visual consistency with the original BMW paint, without the need for additional painting if the color code matches the vehicle's body. The metallic structure of the paint coating provides the characteristic BMW play of light on the surface, which improves the visual perception of the entire rear part of the car.

For users who care about body aesthetics, it is important that the fuel filler flap is an element visible every day – its proper color and geometric fit affects the overall appearance of the vehicle. Using the original shade of metallic grey helps avoid tone differences often encountered when painting aftermarket replacements.

Function in the fuel system and technical aspects

The fuel filler flap plays an important protective role within the refueling system, securing the cap and filler neck against external contaminants. The construction adapted to BMW vehicles allows for cooperation with both petrol and diesel units, which increases the versatility of application within the F34 engine range.

The element has been designed to:

• maintain a stable position relative to the body panel during opening and closing,
• provide adequate protection of the filler area against water and road dirt,
• maintain correct gaps and parting lines with adjacent body panels.

Thanks to this, replacing a damaged flap allows you to restore both the functionality and aesthetics of the rear part of the vehicle without interfering with the fuel system structure.

Characteristics of the used component

The offered fuel filler flap is a used part, which is a beneficial solution for drivers looking for original BMW components in a more economical form. Choosing such an element allows you to maintain factory fitment and material compatibility with other body panels, while reducing repair costs.

The used component from the Fuel filler covers and accessories group is also a conscious choice from an environmental perspective – reusing functional parts reduces the demand for the production of new parts and supports the idea of recycling in the automotive industry.

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

Technical support and knowledge about the fuel system

To better understand the role of the fuel filler flap in the entire fuel supply system and to correctly select accompanying elements, it is worth using reliable technical materials. Practical information on diagnostics, selecting parts by factory numbers, and operating principles can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses key issues related to the fuel system in an accessible way.

For drivers who want to combine repair economy with care for the environment, especially when choosing body and equipment elements, the guide Eco-driving: discover the benefits of used car parts, describing the advantages of using used components in daily vehicle operation, may also be helpful.