BMW 3 Series E90 Boot Trunk Left N/S Lateral Trim Cover Grey 7139439

BMW 3 Series E90 Boot Trunk Left N/S Lateral Trim Cover is an original cargo area trim component designed for installation on the left side of the trunk. Thanks to its factory-fit design and the preservation of the correct shape and mounting points, this side panel allows for an aesthetic and functional restoration of your BMW's trunk interior. This used grey upholstery is a practical solution for post-accident repairs, replacing damaged linings, or completing the vehicle's interior.

Specifications and technical data

• SKU: 7139439
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7139439
• Substitutable numbers: 51477139439, 7139439
• Weight: 150
• Location on the vehicle: Left
• Color: Grey
• Category: Other Interior Parts & Accessories

Purpose and function of the component

The presented side cover is dedicated to installation on the left side of the trunk, where it serves as an aesthetic finish for the wheel arch and covers structural elements and wiring. A correctly selected side panel:

• restores the factory look of the trunk interior,
• reduces noise and vibrations transmitted from the bodywork,
• protects cables, modules, and metal panels from accidental damage by cargo,
• helps maintain order in the cargo area.

The grey upholstery finish allows for a consistent match with the original interior color scheme used in the BMW 3 Series E90.

Construction, material, and color

The trunk side cover is made of a durable structural backing covered with Grey upholstery, which ensures appropriate rigidity and resistance to typical operational loads. The applied surface structure is similar to the factory finish, allowing the component to integrate well with the other trunk panels.

The well-thought-out geometry of the side panel enables proper edge alignment with seals, rear seat backrests, and the trunk floor, which minimizes the risk of looseness, rattles, and unwanted noises while driving.

Performance parameters and installation

The left-side trunk upholstery has been designed for installation into factory mounting points, which facilitates service work and reduces replacement time. The component has a specific weight, chosen to strike a balance between rigidity and ease of handling during installation.

As a part of the trunk interior trim group, the side panel works well both for local repairs and for comprehensive restoration of the cargo area following mechanical damage or corrosion. Its used condition allows for an economical restoration of the original interior while maintaining proper fitment to the bodywork.

Compatibility and identification

The component comes from the BMW range, which facilitates identification against factory parts catalogs and ensures compatibility with the BMW 3 Series E90 body structure. The product has an assigned OEM part number and interchangeable numbers, allowing it to be precisely verified using service catalogs or parts selection tools.

In case of doubt during selection, it is worth comparing the shape, placement of mounting points, and upholstery color with the component currently installed in the vehicle to confirm full compatibility.

Trunk interior expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the trunk area in your BMW and need other components from the same group, such as side panels, wheel arch covers, or additional upholstery trims, check out the available parts in the Other BMW category.

To expand your knowledge about structural differences between sports and standard versions of cars, including changes in the drivetrain and chassis, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate components depending on the model version.