Door Rear BMW G20 G21 Left Door N/S Portimao Blue Metallic - C31

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 G20/G21 Rear Left Door in Portimao Blue Metallic C31 is an original body part from the Doors and Door Panels group, designed for professional repair of the vehicle's side body. This solution is for users expecting factory fitment, a consistent body line, and preservation of the original Portimao Blue Metallic paint character.

Specifications and technical data

• SKU: 7482277-POR
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7482277
• Substitutable numbers: 7482277, 41517482277
• Location on the vehicle: Rear, Left
• Color: Portimao Blue Metallic - C31
• Category: Doors & Door Skins

Intended Use and Fitment for BMW G20/G21

The presented rear left door is structurally prepared for installation in BMW 3 Series G20 (sedan) and G21 (kombi Touring) models, in the rear section of the body on the driver's side. Its placement on the vehicle is factory-defined, which facilitates precise alignment with the sill line, pillars, and rear fender, as well as correct positioning of the gaps between body elements.

Original BMW origin promotes the preservation of the door's correct geometry, proper hinge operation, and compatibility with factory locks, seals, and hardware. This allows the part to be used for both post-accident repairs and replacement of corroded or mechanically damaged doors.

Portimao Blue Metallic C31 Color and Painting Benefits

The door is finished in the attractive Portimao Blue Metallic C31 color, characteristic of newer BMW models, which helps maintain the visual consistency of the entire body. The metallic paint finish provides color depth and a modern look, while also facilitating shade matching for potential painting work on adjacent panels.

For body and paint shops, this means the possibility of limiting the scope of painting to the necessary minimum or using the existing coating as a reference base for blending. In many cases, this can reduce repair time and optimize costs while maintaining a high-quality final result.

Part Characteristics and Application in Repairs

As a part from the Doors and Door Panels group, the BMW G20/G21 rear left door plays a key structural and functional role: it contributes to the rigidity of the side body, proper window operation, and interior sealing against external conditions. The used nature of the product makes it a cost-effective solution while preserving original geometry and factory mounting points.

The door can be used in the following repair scenarios:

• replacement after a side collision, when repairing the old part is not cost-effective,
• replacement of doors with advanced corrosion or numerous paint repairs,
• restoring the original appearance of the vehicle after unprofessional body modifications.

Proper installation preparation by the workshop (straightness check, gap adjustment, mounting verification) allows for a factory-like finish, maintaining acoustic comfort and door functionality.

Body Zone and Compatible BMW Door Components

The rear left door is a central element of the side body zone, working in conjunction with sills, pillars, seals, and the side window. During a comprehensive repair of this body section, other door components such as skins, internal reinforcements, or upholstery mounting elements are often replaced as well. If you are planning a comprehensive repair or upgrade of the door zone in your BMW and need other parts from the same group, such as skins, reinforcements, or additional panels, check the available parts in the BMW Doors and Door Panels category.

Practical Installation and Operational Tips

When installing a used BMW G20/G21 door, it is worth paying attention to several technical aspects that affect durability and user comfort:

• precise alignment of the door relative to the pillars and sills to avoid excessive stress on the hinges,
• verification of the condition of seals and window guides to ensure proper sealing and reduce noise,
• checking the operation of the lock and opening mechanism, especially concerning the central locking and child lock.

For users considering other mechanical or body repairs, advisory materials may be helpful, such as an article discussing the cost-effectiveness of using used components – you can find it here: Used Gearbox – When is it Worth It and What You Need to Know. This allows for a better understanding of the specifics of installing aftermarket parts and consciously planning the next stages of vehicle servicing.