BMW F31 Fuel Filler Fill In Flap Cover Cap Mineral Grey Metallic - B39 7300931

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F31 Fuel Filler Fill In Flap Cover Cap Mineral Grey Metallic - B39 in Mineral Grey Metallic - B39 is an original body component designed for the rear section of the vehicle. As part of the Fuel filler covers and accessories group, it ensures a consistent look for the side body line and proper coverage of the fuel filler, which is important for both aesthetic and functional reasons. Using an OEM component allows for a technically correct replacement of a damaged flap without interfering with the body structure.

Specifications and technical data

• SKU: 7300931-MG
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7300931
• Substitutable numbers: 7300931, 41007300931
• Location on the vehicle: Rear
• Color: Mineral Grau Metallic - B39
• Category: Fuel Flaps & Components

Purpose and fitment for BMW F31

The presented flap is dedicated to the rear body section of the BMW F31 series, which means it maintains the factory geometry, correct bending radius, and character lines. As a result, after installation, it achieves proper alignment with the fender and bumper without the need for additional bodywork. The element is prepared to work with the standard fuel filler opening and closing mechanism, which facilitates installation in workshop or service conditions.

Mineral Grey Metallic - B39 color and visual qualities

The Mineral Grey Metallic - B39 color is a popular, elegant shade used by BMW, which effectively masks minor dirt and visually emphasizes the body line. The metallic paint coating provides a characteristic depth of color and uniform light reflection, which is essential for matching other body elements in the same color. Replacing the flap with an originally painted element in the same shade reduces the need for additional painting and allows for a faster restoration of the vehicle's consistent appearance.

Protective and functional role of the fuel filler flap

As an element from the Fuel filler covers and accessories group, the flap is responsible for protecting the fuel filler from dirt, moisture, and mechanical damage. A properly selected and installed part helps reduce the risk of dirt entering the area around the cap, which is important for the long-term, trouble-free operation of the fuel system. The stable mounting in the rear body section also contributes to the comfort of daily use – opening and closing the fuel filler remains predictable and repeatable.

Condition, origin, and benefits of choosing a used part

The offered fuel filler flap is a used item, which in practice means a favorable compromise between the cost of repair and maintaining the original character of the vehicle. Choosing an OEM component from disassembly allows you to maintain material and structural consistency with the rest of the body panels while reducing expenses compared to purchasing a new part. For workshops and individual users, this is a particularly attractive solution for post-accident repairs and minor visual corrections.

Installation recommendations and selection by parameters

Before installation, it is worth verifying the compatibility of the flap with the specific BMW F31 body version, especially regarding the shape, mounts, and opening system. It is recommended that the installation be performed by a workshop experienced in working with BMW body parts, which minimizes the risk of paint damage and ensures proper fitment. If necessary, the selection can be further confirmed based on vehicle data, such as body configuration and the paint color used.

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, shields, or accessory trim elements, check the available parts in the BMW fuel filler covers and accessories category.

Technical support and fuel system operation

For users who want to better understand the impact of the condition of external elements on the long-term operation of the fuel system, a guide describing the construction and maintenance of the entire system will be helpful. Detailed information on diagnostics, component selection by identification numbers, and operating principles can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which facilitates making informed service decisions.