BMW U06 Fuel Tank Filler Flap Cap Cover Portimao Blue Metallic C31 8499257

BMW U06 Fuel Tank Filler Flap Cap Cover Portimao Blue Metallic C31 is an original body component designed for BMW U06 series models, ensuring a consistent body appearance and proper coverage of the fuel filler neck. Thanks to its factory origin from the Fuel filler flaps and accessories range, it maintains the correct geometry, body line contours, and compatibility with the factory opening mechanism.

Specifications and technical data

• SKU: 8499257-POR
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8499257
• Substitutable numbers: 8499257, 41008499257
• Color: Portimao Blue Metallic - C31
• Category: Fuel Flaps & Components

Purpose and function of the component

The fuel filler flap in the BMW U06 is responsible for tightly sealing the filler area, protecting the cap socket from dirt, and maintaining the continuity of the side body panel surface. The original design ensures:

• proper fitment to the shape of the fender and body lines,
• compatibility with the stock hinge and opening mechanism,
• stable positioning relative to the seal and fuel filler socket.

As a result, the factory geometry is maintained after installation, and the gaps between the flap and the bodywork remain uniform.

Portimao Blue Metallic – C31 color

The finish in Portimao Blue Metallic – C31 is a distinctive, dynamic metallic paint from BMW, commonly found in newer premium models. Using the original color allows you to:

• minimize the scope of potential painting when replacing a damaged flap,
• maintain visual consistency across the entire side of the vehicle,
• ensure compliance with the factory BMW color palette.

This is particularly important for post-accident repairs and precise body panel alignment.

Characteristics of the original BMW part

As a BMW brand component from the Fuel filler flaps and accessories group, the flap has been designed to meet the manufacturer's requirements regarding rigidity, weather resistance, and dimensional repeatability. In practice, this means:

• maintaining proper operation of the opening and closing mechanism,
• no need for mounting modifications during installation,
• easier alignment of the component relative to adjacent body panels.

The used component allows for an economical repair while maintaining the original manufacturer's specifications.

Selection, installation, and integration with the fuel system

When selecting a fuel filler flap for a BMW U06, it is crucial to match it to the specific body version and paint color. The original part with preserved factory markings facilitates identification and verification of compatibility with the vehicle. Installation is performed standardly within the fuel filler area, using factory mounting points and the stock hinge.

If you want to better understand the role of the fuel filler cover in the context of the entire fuel system, diagnostics, and component selection by manufacturer codes, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

BMW fuel filler flaps – expansion and modernization

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

When performing bodywork and replacing body components with salvaged parts, it is also worth checking out the guide: Replacing body parts with used ones – can salvaged body parts look like new?, which discusses the practical aspects of selecting and evaluating used body panels.