BMW Z4 E89 Rear Bulkhead Panel Interior Trim Trunk Boot Partition Black 9171840

Visual condition of the part

The product shows signs of use visible in the photos.

BMW Z4 E89 Rear Bulkhead Panel Interior Trim Trunk Boot Partition is an original luggage compartment trim component designed for installation in the rear section of the vehicle body. This black lining provides an aesthetic finish to the trunk interior, ensuring a consistent look with the factory upholstery and stable mounting for adjacent components. It is a practical solution for users looking to restore the original interior appearance after a collision, disassembly, or upgrade.

Specifications and technical data

• SKU: 9171840
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9171840
• Substitutable numbers: 9171840, 51469171840
• Location on the vehicle: Rear
• Color: Black
• Category: Trim

Purpose and function of the component

The presented trunk side cover has been designed specifically for the BMW Z4 E89 body, with a focus on precise fitment to the rear section of the vehicle. The element serves as a protective lining that masks the body structure, wiring, and mechanism mounts, while simultaneously limiting the ingress of dirt into hard-to-reach areas. This keeps the trunk interior organized and makes servicing individual sub-assemblies easier.

Color scheme and interior integration

The black color of the cover helps maintain the uniform, understated look of the luggage compartment characteristic of BMW models. This shade effectively masks typical signs of wear while allowing for a consistent connection with other linings and decorative trims in this area. The element is part of the Linings, decorative trims, and decorations group, which facilitates the selection of other finishing components during larger renovation projects.

Installation characteristics

The cover is adapted for installation in the rear of the vehicle at factory-designated mounting points. The design, matched to the geometry of the E89 trunk, allows for precise alignment with adjacent panels, which reduces the risk of looseness, rattles, and unwanted vibrations while driving. This also facilitates disassembly and reassembly during service work, e.g., when accessing the electrical system or body components beneath the lining.

Benefits of using an original cover

Using a factory trunk bulkhead panel allows you to maintain the original geometry and BMW finishing standard, which is important both for post-accident repairs and for restoring the vehicle's condition before sale. A used OEM element is a favorable compromise between quality and cost, especially in the case of more extensive body repairs where compliance with factory specifications and proper fitment with other panels is essential.

Expanding work within the trunk finish

If you are planning a comprehensive repair or upgrade of the trunk area in your BMW and need other elements from the same group, such as covers, decorative trims, or additional finishing panels, check out the available parts in the BMW Linings, decorative trims, and decorations category.

Support for post-accident repairs

For major body repairs, especially after collisions, it is worth familiarizing yourself with best practices for selecting dismantled body parts, installation procedures, and common problems encountered in workshops. The following article discussing body repairs using original used components may be helpful: Bodywork and chassis – post-accident repairs using dismantled parts.