BMW F30 F80 M3 Fuel Cover Fill In Flap Estorilblau Estoril Blue B45

BMW F30 F80 M3 Fuel Cover Fill In Flap Estorilblau Estoril Blue B45 is an original fuel filler flap designed for 3 Series models, including the sporty M3 version. The component, finished in the distinctive Estoril Blau Metallic B45 color, allows you to maintain body paint consistency and restore factory aesthetics after damage or bodywork repairs.

Specifications and technical data

• SKU: 2239979-EB
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2239979
• Substitutable numbers: 2239979, 41002239979
• Color: Estoril Blau Metallic - B45
• Category: Fuel Flaps & Components

Purpose and function of the fuel filler flap

The fuel filler flap in BMW F30 and F80 M3 models is responsible for protecting the fuel filler from dirt, moisture, and mechanical damage. A properly selected component ensures:

• proper closing and compatibility with the opening mechanism,
• protection of the filler housing against dirt and corrosion,
• maintenance of the body line continuity and factory fitment.

In the case of post-accident repairs or local paintwork, using an original flap from the same body generation reduces the need for additional installation modifications.

Estoril Blau Metallic B45 color – visual matching

The presented flap is finished in Estoril Blau Metallic B45, a color characteristic of sporty BMW configurations. Thanks to this:

• it is easier to achieve shade consistency with other body panels,
• the scope of painting work is kept to a minimum,
• the original, dynamic body styling is preserved.

For users who care about the vehicle's visual appearance, this is a practical solution when replacing a damaged flap or completing parts after side body panel repairs.

OEM construction and fitment for BMW

The flap belongs to the Fuel filler covers and accessories group, meaning it was designed to work with the factory BMW fuel filler mechanism. Proper profiling and mounting methods allow for:

• maintaining the correct geometry relative to the fender and bumper,
• proper operation of the hinge and opening spring,
• seamless integration with the vehicle's existing setup.

As a result, the component can be used both for standard replacement and during more extensive bodywork, where precise fitment with the body is essential.

Condition of the component and practical application

The offered fuel filler flap is a used part, which in practice represents a favorable compromise between repair costs and maintaining original BMW specifications. Such components are frequently chosen for:

• local repairs after minor collisions or scratches,
• restoring the car to a near-factory state after modifications,
• optimizing service costs while retaining OEM parts.

For body shops and individual users, this is a practical solution allowing for an efficient and economical replacement of a damaged part.

Integration with the fuel system and technical knowledge

Although the fuel filler flap is not a working component of the fuel system, its proper operation contributes to protecting the filler area and daily convenience. For those who want to better understand the connections between the filler, tank, and other components, we recommend the article: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

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 protections, check out the available parts in the BMW fuel filler covers and accessories category.