BMW 3 4 E93 F33 1 Folding Top Hardtop Roof Shell Centre Spacegrau Grey - A52

Visual condition of the part

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

BMW 3 4 E93 F33 1 Folding Top Hardtop Roof Shell Centre Spacegrau Grey is an original body component designed for E93 and F33 models, finished in Spacegrau Metallic A52 paint. This precisely fitted roof panel allows for professional repair or replacement of a damaged hardtop segment, maintaining factory geometry and color consistency of the vehicle body.

Specifications and technical data

• SKU: 7400555-SCG1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7400555
• Substitutable numbers: 41007400555, 7400555, 54377183297, 7183297, 54377251990, 7251990, BG
• Weight: 150
• Color: Spacegrau Metallic - A52
• Category: Other Exterior Parts & Accessories

Purpose and function of the component

The described hardtop centre shell is the central panel of the folding roof in the BMW 3 Series E93 and 4 Series F33 convertible. It is responsible for:

• maintaining the continuity of the roof surface in the closed position,
• cooperating with the folding mechanism and the front/rear segments,
• structural stability of the hardtop while driving.

Thanks to its factory origin, the panel ensures proper mounting points, alignment with the body lines, and compatibility with original seals and fittings.

Color and paint matching

The component is finished in Spacegrau Metallic A52, characteristic of many BMW 3 and 4 Series vehicles. For body shops and users, this means:

• easier matching to the vehicle's existing paint,
• the possibility of limiting the scope of painting to correction and blending,
• a consistent, aesthetic appearance of the roof after repair.

The base color, compliant with the manufacturer's palette, also facilitates subsequent renovation work and surface polishing.

Technical characteristics and installation

The hardtop centre shell is a component of significant weight and dimensions, which requires the use of appropriate installation procedures and workshop equipment. In practice, this means the necessity of:

• using hoists or slings for safe handling of the panel,
• precise adjustment relative to the guides and hinges of the folding roof mechanism,
• checking gaps and fitment against adjacent roof segments and seals.

Installation in a specialized service center dealing with BMW convertible bodies is recommended, which allows for maintaining the correct operation of the entire roof folding system.

Component condition and use in repairs

The product comes from disassembly and is intended for use as a spare part in BMW 3 Series E93 and 4 Series F33 vehicles with a folding hardtop. It is particularly useful in situations where:

• mechanical damage to the middle roof segment has occurred (e.g., after a collision or hail),
• replacement of the shell is necessary due to previous, improper body repairs,
• the user aims to restore the factory appearance and geometry of the roof.

Using an original panel allows for reducing the risk of problems with roof closing, leaks, and aerodynamic noise.

Integration with other BMW body components

The hardtop centre shell works with other roof segments, the windshield frame, the trunk lid, and the system of guides and actuators. When planning a larger scope of bodywork in the folding roof area, it is worth considering the condition of seals, interior linings, and mounting elements as well.

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

Technical support and part selection

For advanced body and mechanical system repairs, a broader understanding of the structural differences between individual model lines can be helpful. In this context, it is worth reading the material comparing technical solutions in sports versions versus standard variants, available in the article Audi RS vs other models – what is hidden under the hood and chassis?. This allows for a better assessment of how manufacturers design key body components and associated systems.