BMW Z4 E85 E86 Side Skirt Left N/S Sill Strip Panel Sterlinggrau Grey - 472

Visual condition of the part

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

BMW Z4 E85 E86 Side Skirt Left N/S Sill Strip Panel Sterlinggrau Grey is an original body component from the Side skirts category, designed for installation on the left side of BMW Z4 E85/E86 generation models. The Sterlinggrau Metallic - 472 paint finish ensures color consistency with the factory bodywork and facilitates visual alignment after repairs or component replacement.

Specifications and technical data

• SKU: 0031109-STG
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0031109
• Substitutable numbers: 51710031109, 0031109
• Weight: 150
• Location on the vehicle: Left
• Color: Sterlinggrau Metallic - 472
• Category: Running Boards & Side Bars

Purpose and function of the component

The presented left side skirt is dedicated to the BMW Z4 E85/E86 and serves as an exterior sill cover responsible for the aesthetic finish of the lower side of the body. This component helps protect the sill area from road debris and contributes to streamlining airflow along the body, which is important for both visual and functional reasons.

Thanks to its precise fit for the specific Z4 generation, the strip maintains the correct geometry and side line of the car, which is crucial for accident repairs and replacing damaged body parts. The correctly matched Sterlinggrau Metallic - 472 color reduces the need for additional paint work or simplifies the process.

Color, finish, and fitment

The Sterlinggrau Metallic - 472 finish is consistent with the BMW factory palette, facilitating integration with the vehicle's existing paint. The metallic structure of the coating ensures a cohesive visual appearance with the remaining body panels, and the appropriately selected weight of the component helps maintain the correct weight distribution along the side of the body.

The left-side placement on the vehicle allows for direct replacement of a damaged strip without interfering with the sill structure. Its original BMW origin helps maintain factory mounting gaps, which translates into even joint lines with the fenders and doors and reduces the need for additional adjustments during installation.

Performance characteristics and installation

As a component in the Side skirts category, the sill cover operates in an area exposed to water, mud, and minor stone impacts. Using an original strip allows for the restoration of the correct appearance and protective function of this body part after operational or collision damage. The product has a specific weight matched to the vehicle's design, which is important for maintaining factory design specifications.

The used condition means the part comes from dismantling, which in practice allows for economical repair while maintaining original BMW specifications. Before installation, standard verification of the surface and mounting points is recommended to ensure proper seating of the strip and even adhesion to the sill.

Application in repairs and upgrades of the BMW Z4

This left side skirt is suitable for both typical replacement of a damaged part and comprehensive renovation of the side body section of the BMW Z4 E85/E86. Using an original sill cover helps maintain the stylistic consistency of the vehicle, which is important for preserving the car's value and for repairs performed in accordance with the manufacturer's guidelines.

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, trims, or additional strips, check the available parts in the BMW Side skirts category.

Additional technical support

When planning broader work on the body or chassis, it is worth considering the condition of components responsible for vehicle handling. Understanding the relationship between body components and driving comfort and precision can be aided by an article describing the operation of the steering and power steering system – you can find it here: Steering and power steering system – how it works and what fails?.