Audi A4 B8 Side Skirt Protection Strip Left N/S Brilliant Black Metallic - Y9B

Visual condition of the part

The product shows signs of use visible in the photos. Audi A4 B8 Side Skirt Protection Strip Left N/S Brilliant Black Metallic - Y9B is an original body component from the Side skirts category, designed for installation on the left side of the vehicle. Thanks to its factory Brilliant Black Metallic - Y9B color, it allows for maintaining visual consistency with other body panels and restoring the aesthetics of the side section of the car after damage or bodywork repairs.

Specifications and technical data

• SKU: 8K0854931A-BBL
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0854931A
• Substitutable numbers: 8K0854931A, 8K0 854 931 A
• Location on the vehicle: Left
• Color: Brilliant Black Metallic - Y9B
• Category: Running Boards & Side Bars

Purpose and body fitment

The presented side skirt is designed specifically for Audi A4 and S4 B8 generation models, taking into account the geometry of the sills and the side body line. The placement on the left side of the vehicle ensures proper fitment with the doors, fender, and other body panels, which minimizes the need for additional modifications during installation. The original construction of the strip guarantees the preservation of factory mounting points, allowing the component to work with existing brackets and clips in the sills. This solution is particularly beneficial for post-accident repairs, where precise reproduction of the side line and proper drainage of dirt and moisture from the sill area are crucial.

Brilliant Black Metallic - Y9B finish

The side skirt is finished in Brilliant Black Metallic - Y9B, characteristic of many Audi paint configurations. The metallic black ensures a consistent, elegant look with the factory body paint, reducing the need for additional painting when replacing the component with a used equivalent in the same color code. Choosing a strip in the correct shade allows you to:

• maintain a uniform color scheme of the side body section,
• reduce the time and cost of paintwork,
• preserve the original visual character of the A4/S4 B8 version.

Characteristics of the used component

As a used component, the side skirt represents a reasonable compromise between repair costs and maintaining original Audi quality. This type of component is particularly recommended for maintenance repairs, correcting parking damage, or restoring the side of the body after minor collisions, where matching the shape and color to the existing bodywork is key. Choosing an original, used side skirt allows you to avoid problems typical of aftermarket replacements, such as inaccurate fitment, differences in paint shade, or other visual parameters deviating from the manufacturer's standard. It is a practical solution for users who want to restore the vehicle's aesthetics while maintaining the factory finish character.

Application in sill area repairs

The side skirt on the left side plays an important protective and aesthetic role in the vehicle's sill area. It is responsible for shielding the edge of the sill from minor mechanical damage and the influence of external factors, while visually organizing the side line of the body. Replacing a damaged strip with an original component in Brilliant Black Metallic - Y9B allows you to restore the consistent look of the entire sill area without interfering with the car's load-bearing structure. If you are planning a comprehensive repair or upgrade of the sill area in your Audi and need other components from the same group, such as covers, overlays, or additional strips, check out the available parts in the Audi side skirts category.

Technical support and part selection

When selecting body components, many users follow a similar logic as when choosing fuel system components – they look for original, used parts that will provide adequate quality at reasonable costs. If you are interested in a broader context of the cost-effectiveness of using used components and want to better understand what to look for when buying dismantled parts, check out the article Fuel dosing problems: what to look for when buying a used injection pump and fuel rails?. For drivers of premium segment cars, it is particularly important to maintain a high visual and technical standard of the vehicle while optimizing service costs. In this context, material describing current trends in the used parts market may also be helpful, available in the article Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend.