BMW Z4 Series E89 Roadster Lateral Trim Panel Rear Left N/S Black 9121823

Visual condition of the part

The product shows signs of use visible in the photos.

BMW Z4 Series E89 Roadster Lateral Trim Panel Rear Left N/S Black is an original interior trim component designed for installation in the rear left section of the cabin. The black finish harmoniously blends with the factory BMW styling, ensuring a consistent, aesthetic look. It is a practical solution for users who want to restore the original appearance of the interior or perform a solid repair after mechanical damage.

Specifications and technical data

• SKU: 9121823-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9121823
• Substitutable numbers: 9121823, 51439121823, 42315871
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Other Interior Parts & Accessories

Purpose and function of the component

The presented side panel is dedicated to the BMW Z4 E89 Roadster model and is mounted in the rear left area of the interior. It is responsible for the aesthetic finish of the side cabin zone, masking structural elements and mounts, while simultaneously protecting them from accidental damage. Thanks to its factory fitment, it ensures proper alignment with adjacent upholstery and trim components.

Color and visual matching

The black color of the panel allows for easy integration into most interior configurations used in the Z4 E89. The uniform color helps maintain a consistent stylistic line, which is particularly important during post-accident repairs or when replacing individual upholstery elements. The neutral black tone works well with both light and dark equipment variants, reducing the risk of visual discrepancies.

Installation characteristics

The panel has been designed as a component intended for installation in a specific location on the body, which facilitates correct seating and limits the need for additional modifications. The properly shaped geometry of the edges allows for a stable connection with adjacent components, and the precise dimensional fit helps eliminate unwanted play or rattles while driving. The factory construction supports the preservation of the original interior ergonomics.

Use in repairs and renovations

The component will prove useful both for standard replacement of damaged trim and for more extensive interior renovation work on the BMW Z4 E89. Using this side panel allows for an economical restoration of the factory look without the need to resort to replacements with uncertain fitment. It is a practical solution for workshops, body shops, and users independently collecting parts for repair.

Why choose a used trim component

Original, used interior trims often offer better dimensional and material compatibility than many aftermarket replacements. In the case of side panels, this has a direct impact on the quality of fit, lack of tension, and stability of the mount in the long term. Choosing a factory component helps maintain the level of finish quality characteristic of BMW and reduces the risk of installation problems.

If you are planning a comprehensive repair or upgrade of the rear interior zone in your BMW and need other elements from the same group, such as additional panels, covers, or upholstery trims, check the available parts in the Other BMW category.

To better plan the scope of work on high-performance cars and understand the structural differences between sports and standard versions, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses key technical aspects and part selection.

If you are considering using original, used body and interior components for repairs, the guide Post-accident repair of your car: why are used body parts a better choice than replacements? may also be helpful, explaining the advantages of such a solution in terms of quality and fitment.