BMW F21 F22 M Sport Sill Strip Side Skirt Left N/S Alpine White 300

Visual condition of the part

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

BMW F21 LCI Left Sill Cover Trim M-Package Alpinweiss 3 - 300 is an original body element from the M line, designed for the left side of the vehicle. Finished in the factory color Alpinweiss 3 - 300, it allows for an aesthetic and technically correct replacement of a damaged sill trim without the need for paint shade matching. This is a used BMW part that retains its proper geometry and mounting points, facilitating installation in facelifted F21 models.

Specifications and technical data

• SKU: 8056817-AW
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8056817
• Substitutable numbers: 51778056817, 8056817
• Location on the vehicle: Left
• Color: Alpinweiss 3 - 300
• Category: Running Boards & Side Bars

Technical characteristics of the BMW F21 LCI sill trim

The presented sill cover has been designed as a factory element for the M-Package version, meaning it matches the sporty styling of the body. Its placement on the left side of the vehicle ensures compatibility with the original sill construction in BMW F21 LCI models. By retaining its original form, the sill trim works well with factory mounting points and the lines of the doors and wheel arches.

The Alpinweiss 3 - 300 color is a popular white shade used by BMW, allowing for a visually cohesive connection with other body elements. The original M-Package trim helps maintain a proper transition between the sill and the lower part of the door, which is important for both appearance and protection of the sills against dirt and minor mechanical damage.

Application and function in the bodywork

The M-Package sill trim performs several important functions in the bodywork construction of the BMW F21 LCI:

• it serves as an external protective cover for the left-side sill,
• it complements the sporty side line characteristic of the M package,
• it helps to limit direct contact of the sill with small stones and debris,
• it contributes to the visual coherence of the lower part of the bodywork.

By retaining its original shape and dimensions, this element allows for the restoration of the vehicle's factory appearance after operational damage or bodywork repairs. This is particularly important for cars with the M-Package, where the side body line is more elaborate than in standard versions.

Benefits of using an original sill trim

Choosing an original BMW sill cover in Alpinweiss 3 - 300 offers a range of practical advantages:

• Factory Fit – maintains compatibility with the F21 LCI body line and left-side mounting points.
• Color Consistency – no need to experiment with white shades, making it easier to match the rest of the bodywork.
• M-Package Compatibility – the trim is adapted to the sporty styling package, thus not disrupting the appearance of the side body.
• Cost-Effective Choice – a used OEM part helps reduce expenses while maintaining original specifications.

This solution is particularly beneficial for users who want to preserve the original character of their car while avoiding the full repainting of a new aftermarket part.

Condition and preparation for installation

The sill trim is in used condition, which is typical for original parts removed from donor vehicles. Before installation, standard verification of mounting points and fitting to the specific BMW F21 LCI model is recommended to ensure proper seating on the left-side sill. In case of bodywork and painting, it is also possible to consider a slight refresh of the paint coating if individual aesthetic expectations require it.

More BMW sill elements and technical knowledge

If you are planning a comprehensive replacement of the side body elements on your BMW and also need other components from this group, check the available parts in the BMW Sill Trims category.

For extensive repairs that also involve electronic systems or sensors, a practical guide on selecting and installing used control modules may be helpful – find more information in the article Used Car Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?.