BMW 3 4 E93 F33 1 Folding Top Hardtop Roof Shell Centre Montegoblau Blue - A51

Visual condition of the part

Possible scratches and paint chips – condition as shown in the product photos.

The BMW 3 4 E93 F33 1 Folding Top Hardtop Roof Shell Centre Montegoblau Blue - A51 in Montegoblau Metallic A51 is an original body component designed for E93 and F33 models. It serves as a key structural element of the folding roof, ensuring proper geometry, rigidity, and an aesthetic body finish in the characteristic metallic blue shade.

Specifications and technical data

• SKU: 7400555-MTB1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7400555
• Substitutable numbers: 41007400555, 7400555, 54377183297, 7183297, 54377251990, 7251990, BG
• Weight: 150
• Color: Montegoblau Metallic - A51
• Category: Other Exterior Parts & Accessories

Purpose and function of the component

The central hardtop roof shell for the folding version is responsible for the stable connection between the front and rear roof segments in BMW 3 Series E93 and 4 Series F33 convertibles. This component works in conjunction with the folding mechanism, guide rails, and seals, creating a rigid, closed body structure when driving with the roof up.

A properly selected roof shell:

• maintains the correct body line and fitment with the side windows,
• supports the operation of the folding roof kinematic system,
• ensures a visually consistent body appearance in the factory Montegoblau Metallic color.

Montegoblau Metallic A51 color and visual matching

The Montegoblau Metallic A51 shade is a distinctive metallic blue BMW paint, often chosen for configurations with a more dynamic, sporty character. Using an original shell in this color allows for maintaining visual consistency across the entire body without the need for a full repaint of the new component from scratch.

When replacing a damaged roof segment with a part in the same paint code, you can significantly reduce the scope of paintwork, which translates into:

• better shade matching to the remaining body panels,
• shorter vehicle preparation time,
• more predictable final results in terms of aesthetics.

Structural characteristics and installation

The central hardtop roof shell is a component with complex geometry, designed to work with the factory roof folding mechanism in BMW convertibles. The design includes mounting points, support points, and zones for interaction with seals and fittings, ensuring that after proper installation, the tightness and appropriate rigidity of the entire roof system are maintained.

Due to the specific nature of the folding roof, installation is recommended at a specialized body and paint shop or a workshop with experience in convertible bodies. Proper adjustment and alignment of the component affect:

• correct roof closing,
• reduction of stress in the folding mechanism,
• acoustic comfort inside the vehicle.

Condition, origin, and part identification

The offered roof shell comes from a BMW vehicle and is an original component, which facilitates matching to factory mounting points and cooperation with the existing body structure. The part is marked with a dedicated OEM number and also has assigned interchangeable numbers, which allows for precise verification of compatibility with a specific model version.

The product has a specified condition, as well as an assigned weight, which is important when planning transport and organizing installation in workshop conditions. Additionally, the applied paint code makes it easier to match the existing vehicle color configuration.

Benefits of using an original roof shell

Using an original central hardtop roof shell in Montegoblau Metallic A51 for the BMW 3 Series E93 or 4 Series F33 allows for restoring the factory body geometry after a collision or mechanical damage. This solution is particularly beneficial when the priority is to maintain a consistent vehicle appearance, proper operation of the folding roof mechanism, and limiting the scope of adaptation work.

This component will prove useful both for post-accident repairs and for comprehensive restoration of a convertible body, where it is important to combine functionality, aesthetics, and compliance with BMW factory specifications.

If you are planning a comprehensive repair or upgrade of the roof area in your BMW and need other components from the same group, such as additional roof panels, seals, or mounts, check out the available parts in the Other BMW category.

For a comparison of the nature of sports models and their impact on the selection of body components and chassis systems, you can read the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses the differences in construction and equipment in the context of selecting spare parts.