BMW F34 GT Fuel Cover Fill-in Flap Filler Cover Midnight Blue - B38 7278405

BMW F34 GT Fuel Cover Fill-in Flap Filler Cover Midnight Blue - B38 is an original body component from the Fuel filler flaps and accessories group, designed for installation in the rear part of the vehicle. The paint in the Midnight Blue Metallic - B38 shade ensures color consistency of the bodywork, and its factory origin guarantees a proper fit to the body lines of the BMW 3 Series Gran Turismo F34.

Specifications and technical data

• SKU: 7278405-MBM
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7278405
• Substitutable numbers: 7278405, 51177278405
• Location on the vehicle: Rear
• Color: Midnight Blue Metallic - B38
• 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 geometry of the rear fender and the flap profile. Its placement in the rear of the vehicle requires precise fitting with the fuel filler recess, which is why using an original component allows for maintaining factory gaps, body lines, and the correct operation of the opening mechanism. The Midnight Blue Metallic - B38 color is a factory BMW paint, making the flap a perfect match for the bodywork in this shade, without the need to match aftermarket replacements with similar but non-identical tones.

Paint characteristics and exterior appearance

The metallic dark blue shade provides a cohesive, elegant look with the rest of the bodywork, and the properly selected paint layer maintains the aesthetics typical of premium BMW models. A flap in this color effectively masks minor dirt and operational signs of use, which is beneficial for daily driving. As a body component, the element influences the visual continuity of the side and rear lines, which is why using an original flap in the correct color is important both for post-accident repairs and when replacing a damaged element after minor collisions or acts of vandalism.

Protective function and role in the fuel system

The fuel filler flap acts as a cover for the fuel cap and filler neck, protecting them from water, mud, road salt, and mechanical contaminants. A properly functioning cover reduces the risk of dirt entering the area around the fuel cap, which facilitates trouble-free refueling and reduces the likelihood of seal damage. For drivers who want to better understand the importance of a properly secured fuel filler in the context of the entire fuel system, the article describing the diagnostics and operation of fuel components will be helpful – details can be found in the material Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Condition, origin, and benefits of choosing a used OEM part

The item comes from dismantling and is offered as a used part, which allows for combining reasonable cost with the preservation of factory build quality. Original BMW components are designed for long-term use, and their construction takes into account the specific loads acting on the bodywork in the area of the rear fuel filler. Choosing a used OEM flap with paint in the correct color code reduces the need for repainting, which shortens repair time and reduces the risk of shade differences between the element and the rest of the body. This is a practical solution for body and paint repairs, where both aesthetics and economy matter.

Complementary body elements and service zones

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 additional covers, mounts, or accessory security elements, check the available parts in the BMW fuel filler flaps and accessories category. For larger body and associated system repairs, it is also worth paying attention to the selection of original components in other areas of the vehicle to maintain the quality consistency of the entire car.