BMW E90 E91 Side Skirt M Sport Sill Strip Covering Right O/S Alpinweiss White

Visual condition of the part

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

BMW E90 E91 Side Skirt M Sport Sill Strip Covering Right O/S Alpinweiss White is an original body component designed for installation on the right side of the vehicle. Designed as part of the M aerodynamic package, it ensures a consistent look with the factory bumper and extension set, while the Alpinweiss White paint helps maintain a uniform body color line.

Specifications and technical data

• SKU: 0033440-AW
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0033440
• Substitutable numbers: M Aerodynamics package, 51770033440, 0033440
• Location on the vehicle: Right
• Color: Alpinweiss 3 - 300
• Category: Other Exterior Parts & Accessories

Purpose and function of the component

The right M Sport side skirt for the BMW 3 Series E90/E91 is responsible for the aesthetic finish of the lower side of the body and for improving airflow along the chassis. This component:

• complements the factory M styling package,
• masks the lower edge of the sill and mounting points,
• visually stabilizes the vehicle's side profile,
• can reduce dirt thrown by the wheels onto the lower part of the doors.

Color and body fitment

The side skirt is finished in Alpinweiss White, characteristic of many BMW E90/E91 units. Thanks to this, provided the paint quality on the body is maintained, it is possible to achieve a visually consistent fit without the need for additional painting or by limiting it to minor touch-ups.

Placement on the right side of the vehicle guarantees compatibility with the factory sill geometry, which translates into proper fitment with the doors, wheel arches, and other M package components. A properly selected side skirt helps maintain the car's side line in accordance with the original BMW design.

Installation characteristics

As a salvaged component, the side skirt is ready for reinstallation in the factory location. The design provides for the use of standard mounting points in the sill and compatibility with original BMW brackets and body clips, which facilitates work for the workshop or the person performing the installation.

In practice, this means that by following the correct installation procedure, you can achieve a stable fit of the skirt, without unwanted gaps or protrusion from the body. This is particularly important for cars equipped with the M package, where the body line and transitions between elements are clearly defined.

Application in the M Sport package

The M Sport side skirt for the BMW E90/E91 is part of an aerodynamic kit that includes, among other things, bumpers and side skirt extensions with a more dynamic line. Using a dedicated side skirt on the right side allows you to:

• maintain the stylistic consistency of the entire package,
• preserve the characteristic, sporty side profile,
• reduce differences in shade and shape between the sides of the vehicle after body and paint repairs.

For users who are restoring the original M Sport configuration or replacing a damaged component, this is a solution that allows for restoring the factory look of the side body area.

Condition and benefits of choosing a used part

The component is used, which in practice means real savings compared to a new part while maintaining the original geometry and compatibility with the BMW body. For many E90/E91 units that have already been in operation for several or more years, using a used part is a reasonable compromise between costs and fitment quality.

Original BMW body components are characterized by dimensional stability and predictable behavior during installation, which is important for post-collision repairs or when replacing individual M Sport package elements.

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

Technical support and knowledge about sports versions

For those interested in the differences between standard and sports versions of cars, including the impact of aerodynamic packages on the car's character, comparative material regarding sports versions of one of the leading manufacturers may be helpful. In this context, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how changes in the body, suspension, and drivetrain affect the final character of the vehicle.