BMW E90 E91 Door Front Left N/S Montegoblau Montego Blue - A51

Listing details and visual condition of the part

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

The offer applies to the bare door – without handle, window, lock, trims, or any other accessories.

There is an option to purchase a complete door for an additional fee of 80 GBP.

BMW E90 E91 Front Left Door Montegoblau - A51 is an original body part from the Doors and Door Panels group, designed for installation on the driver's side at the front of the vehicle. The paint in the Montegoblau Metallic - A51 shade allows for an aesthetic match to the factory body color, facilitating post-accident repairs or replacement of a damaged panel. A used OEM component ensures proper geometry and compatibility with the BMW 3 Series E90/E91 body structure.

Specifications and technical data

• SKU: 7203643-MTB1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7203643
• Substitutable numbers: 41007203643, 7203643, 41517152685, 7152685, KZ
• Weight: 150
• Location on the vehicle: Front, Left
• Color: Montegoblau Metallic - A51
• Category: Doors & Door Skins

Purpose and Fitment for BMW Bodywork

The presented front left door is designed as a structural element of the BMW 3 Series E90/E91 generation body. Its placement in the front driver's side area allows for direct replacement of damaged cladding without altering the body's architecture. The use of an original door panel helps maintain correct panel gaps, proper window operation, and secure door latching.

This part belongs to the Doors and Door Panels group, meaning it is adapted to work with factory hinges, locks, seals, and the door hardware installation intended for this generation of BMW. This allows for the transfer of equipment from the previously installed door, maintaining functional and visual consistency.

Montegoblau Metallic - A51 Color and Paint Aspect

The factory color Montegoblau Metallic - A51 is a distinctive metallic blue shade used by BMW, which nicely accentuates the side profile of the 3 Series body. Using a door in the same paint code minimizes the scope of painting work, especially in single-side repairs where maintaining visual consistency with the fender, sill, and rear quarter panel is crucial.

For body and paint shops, using a part in the correct base color means less material, shorter preparation time, and easier achievement of a uniform paint blend into adjacent panels. In practice, this translates to a more predictable final result and stable repair quality.

Structural Characteristics and Installation

The front left door serves as a load-bearing component for the window, lifting mechanism, lock, handle, and seals. Therefore, using an original panel is important for the body's lateral rigidity and acoustic comfort. The construction is prepared for the installation of factory hinge mounts and hardware attachment points, facilitating the transfer of existing components from the previous door.

When replacing a body part, the proper weight distribution in the vehicle is also important – doors have a specific weight that is accounted for in the design of hinges and door checks. Using the correct panel ensures proper operation of opening and closing mechanisms and reduces the risk of excessive stress on the mounts.

Used Condition and Service Application

The offered part is in used condition, making it a sensible choice for accident repairs, restorations, or budget-conscious vehicle rebuilds. In practice, this allows for reduced costs compared to a new panel while maintaining original geometry and mounting compatibility. This type of solution is often chosen by workshops specializing in BMW repairs, where both technical correctness and service economics are important.

The door can be used for spot repairs (single panel replacement) as well as in broader restoration projects where restoring the original appearance of the vehicle's side body without resorting to aftermarket parts with uncertain geometry is important.

Expanding BMW Body Repair

If you are planning a comprehensive repair or modernization of the side body area on your BMW and need other parts from the same group, such as door skins, reinforcements, or outer panels, check the available parts in the BMW Doors and Door Panels category.

For users interested in a broader technical context of this brand's vehicles, including the impact of body weight and load distribution on AWD powertrain operation, an article comparing solutions used by major manufacturers may be helpful – you can find it here: xDrive, 4Matic, quattro or 4Motion – AWD comparison.