BMW 3 Series E90 E91 M Sport Sill Strip Side Skirt Left N/S Black Sapphire

BMW 3 Series E90 E91 M Sport Sill Strip Side Skirt Left N/S Black Sapphire is an original body component designed for installation on the left side, dedicated to versions with the M aerodynamic package. The Black Sapphire Metallic paint finish ensures consistency with the factory look and allows for maintaining the body aesthetics without the need for additional modifications. It is a practical solution for both post-accident repairs and visually upgrading the vehicle to the M specification.

Specifications and technical data

• SKU: 0033441-BS1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0033441
• Substitutable numbers: M Aerodynamics package, 51770033441, 0033441
• Location on the vehicle: Left
• Color: Black Sapphire Metallic - 475
• Category: Other Exterior Parts & Accessories

Purpose and function of the side skirt

The presented side skirt has been designed as a component of the side body area, mounted on the left side of the vehicle. It is responsible for the aesthetic finish of the sill while simultaneously contributing to the aerodynamic line characteristic of the M package, improving visual consistency with the bumpers and other styling elements.

Thanks to its factory profile, the trim fits the body shape of the BMW 3 Series E90, which facilitates installation and allows for achieving an even gap relative to the doors and wheel arches. This solution is particularly beneficial when replacing a damaged part or converting a standard version to an M package variant.

Black Sapphire Metallic paint finish

The trim is finished in Black Sapphire Metallic, one of the popular shades used by BMW. The metallic structure of the paint harmonizes well with the body line, emphasizing the characteristic contours of the sills and giving the vehicle a cohesive, dynamic look.

Choosing the right color is not only important for aesthetic reasons but also practical – it reduces the need for additional painting and shortens repair time. For professional body and paint shops, this allows for optimizing the restoration process of the side body section.

Installation and fitment for BMW E90

The side skirt is intended for installation on the left side of the vehicle, using the factory mounting points provided for the M package. The design of the component allows for:

• maintaining the correct geometry of the sill line,
• perfect fitment with original body mounts,
• achieving even gaps relative to the doors and wheel arches.

As a result, this component works well both in post-accident repairs and in visual vehicle upgrades, where maintaining the factory look and proper side body aerodynamics is crucial.

Characteristics of the used product

The offered side skirt is a used part, which in practice means a favorable cost-to-quality ratio while maintaining original geometry and compatibility with the BMW body. Compared to aftermarket replacements, this reduces the risk of fitment issues and the need for additional installation modifications.

For workshops and individual users, this means the possibility of an economical repair or upgrade of the vehicle while maintaining the factory character of the M package, without compromises in terms of shape and sill line.

Expanding your BMW sill area upgrade

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 out the available parts in the Other BMW category.

Technical knowledge and tuning inspiration

When planning stylistic or technical modifications, it is worth expanding your knowledge about solutions used in sports versions of other brands. A good basis for comparison can be an article describing the differences in the construction of engines, brakes, and chassis in high-performance models – you can find it here: Audi RS vs other models – what is hidden under the hood and chassis?.