Side Skirt BMW Z4 E85 E86 Left N/S Sill Strip Cover Panel Black Sapphire - 475

Visual condition of the part

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

Side Skirt BMW Z4 E85 E86 Left N/S Sill Strip Cover Panel Black Sapphire - 475 is an original body component from the Side Skirts category, designed for installation on the left side of BMW Z4 E85/E86 generation models. Finished in Black Sapphire Metallic - 475 paint, it allows for maintaining color consistency of the bodywork and restoring the factory look of the sill area after damage or corrosion.

Specifications and technical data

• SKU: 0031109-BS
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0031109
• Substitutable numbers: 0031109, 51710031109
• Location on the vehicle: Left
• Color: Black Sapphire Metallic - 475
• Category: Running Boards & Side Bars

Purpose and function of the component

The described sill cover is dedicated to the left side of the BMW Z4 E85/E86 body and serves as an integral protective and aesthetic element of the sill area. Its task is to shield the sill from mechanical damage resulting from daily use, as well as to maintain the proper side line of the vehicle in accordance with the manufacturer's design.

This component is particularly important for post-accident repairs, body restoration, or returning the car to a condition close to factory-new, especially in vehicles used seasonally or for collection purposes.

Color and paint matching

The side skirt has been finished in Black Sapphire Metallic - 475, which allows for maintaining consistency with the original body paint in this color specification. The metallic coating provides the characteristic depth and gloss typical of the factory BMW finish, which reduces the need for additional painting when properly matched with other body components.

Such a solution is beneficial both for spot replacement of a damaged sill and for broader body and paint work, where precise reproduction of the vehicle's original appearance is essential.

Installation characteristics

As a component from the Side Skirts category, the cover has been designed for specific mounting points on the BMW Z4 E85/E86 body on the left side. This makes it possible to maintain proper fitment with the doors, fenders, and other sill covers, without the need for modifying the body structure.

With proper installation, you achieve:

• stable seating of the strip in factory mounting points,
• correct side line of the body,
• aesthetic transition between the sill and the lower edge of the door.

Condition and use in repairs

The component is offered in used condition, which makes it a practical solution for economical repair of the BMW Z4 E85/E86 body. This type of part will work particularly well in situations where the priority is to maintain the original geometry and character of the vehicle while optimizing repair costs.

Choosing an original, used side skirt allows for a better fit to the existing body structure than in the case of replacements with universal geometry, which is significant for both the durability of the installation and the final visual effect.

Expansion of the sill area and related components

If you are planning a comprehensive repair or upgrade of the sill area in your BMW and need other components from the same group, such as covers, overlays, or additional strips, check the available parts in the BMW Side Skirts category.

Additional technical support

For broader service work, including the drivetrain, it is worth familiarizing yourself with practical tips regarding the verification of used components. The article describing key inspection steps before installation may be helpful, available here: Buying a used engine: 5 things you must check before installation.