BMW F21 Fuel Fill in Filler Tank Flap Cover Mineral Grey Metallic - B39 7270543

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F21 Fuel Fill in Filler Tank Flap Cover Mineral Grey Metallic is an original body component from the Fuel filler flaps and accessories group, designed for a precise fit in 1 Series F21 models. The paint in the Mineral Grau Metallic – B39 shade allows for seamless integration with the factory body finish without the need for additional color matching.

Specifications and technical data

• SKU: 7270543-MG
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7270543
• Substitutable numbers: 7270543, 51177270543
• Color: Mineral Grau Metallic - B39
• Category: Fuel Flaps & Components

Technical characteristics and fitment

The BMW F21 fuel filler flap is designed as a body component that works with the factory fuel filler opening and closing mechanism. The design, based on an OEM solution, ensures proper alignment with the fender line, correct hinge geometry, and appropriate rigidity during daily use.

The Mineral Grau Metallic – B39 color is a popular metallic grey shade used in many BMW vehicles, which facilitates the aesthetic replacement of a damaged flap without the need for full repainting of the component. This allows for limiting body and paint work exclusively to installation and potential coating touch-ups.

Function in the fuel system and bodywork

As a component of the Fuel filler flaps and accessories category, the flap performs several important operational functions:

• protects the fuel cap from dirt and moisture,
• stabilizes the filler area during refueling,
• supports the maintenance of the correct body line in the area of the rear fender,
• reduces the risk of mechanical damage to the cap and the filler neck.

A properly selected and installed fuel filler flap affects both the comfort of operating the fuel system and the visual consistency of the side of the vehicle body.

To better understand the role of this component in the entire fuel supply path, it is worth reading the guide on diagnostics and maintenance of the fuel system – it discusses in detail, among other things, the selection of components by OEM numbers and the principles of their regeneration: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Mineral Grau Metallic – B39 color scheme

The Mineral Grau Metallic – B39 shade is characterized by a subdued, metallic grey with a distinct light effect that effectively masks minor dirt and typical signs of wear. When replacing a flap in this color, you can:

• maintain the visual consistency of the entire side of the vehicle,
• minimize shade differences between the new component and adjacent panels,
• limit the scope of painting to local touch-ups or avoid them entirely if the condition of the coating is satisfactory.

For body and paint workshops, using a ready-made component in the factory color shortens repair time and simplifies the process of preparing the vehicle for delivery to the customer.

Practical application and installation

The BMW F21 fuel filler flap in Mineral Grau Metallic – B39 is intended for installation in place of the factory component, using the original mounting points. In practice, this means:

• the possibility of transferring the existing opening mechanism (if the vehicle design requires it),
• maintaining the correct gap between the flap and the bodywork,
• no need for modifications to the bodywork in the fuel filler area.

When replacing, it is worth paying attention to the condition of the hinge, spring, and seals in the filler area to avoid the need for re-disassembly in the near future.

Integration with other category items

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

Summary

BMW F21 Fuel Fill in Filler Tank Flap Cover Mineral Grey Metallic is a practical solution for users and workshops that want to restore the aesthetics and functionality of the fuel filler area after mechanical or collision damage. The original design, fitment for the F21 body, and factory Mineral Grau Metallic – B39 paint allow for an efficient, technically correct replacement while maintaining a consistent vehicle appearance.