BMW E90 LCI Side Skirt M Sport Sill Strip Left N/S Black Sapphire Metallic - 475

Visual condition of the part

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

BMW E90 LCI Side Skirt M Sport Sill Strip Left N/S Black Sapphire Metallic is an original body component from the Sill strips category, designed for installation on the left side of the vehicle. The Black Sapphire Metallic paint finish ensures visual consistency with the factory bodywork and allows for an aesthetic replacement of a damaged side skirt without the need for costly stylistic modifications. This used OEM component is a sensible choice for accident repairs and for restoring the factory look of the M Sport version.

Specifications and technical data

• SKU: 0037229-BS4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0037229
• Substitutable numbers: 51770037229, 0037229, BG
• Location on the vehicle: Left
• Color: Black Sapphire Metallic - 475
• Category: Running Boards & Side Bars

Purpose and function of the BMW E90 LCI left side skirt

The presented left side skirt is a structural and protective body component, tailored for the facelift (LCI) version of the 3 Series E90 with the M Sport package. Its purpose is to protect the lower part of the body, improve aerodynamics, and maintain the characteristic, sporty side line typical of the M Sport package. Thanks to its factory profile, it ensures proper fitment with the doors, wheel arches, and other body panels.

Color and Black Sapphire Metallic paint matching

The Black Sapphire Metallic finish allows for maintaining a uniform paint surface in BMW vehicles with the same color code. The metallic black effectively masks minor dirt and highlights the side skirt line, which is particularly important in versions with a sporty character. In many cases, this allows for installation without the need to repaint the entire element, limiting the scope of work to potential local touch-ups.

Installation characteristics and body integration

The left side skirt has been designed as an OEM part for direct integration with the factory mounting points on the BMW 3 Series E90 LCI. Its properly shaped geometry ensures:

• correct alignment of the body side line in the M Sport version,
• stable seating on original brackets and clips,
• compatibility with factory covers and wheel arches.

As a result, this component can be used both for body and paint repairs, as well as for replacing worn or damaged side skirts during vehicle restoration.

Used condition and advantages of the original BMW component

As a used OEM part, the left side skirt retains its factory geometry and proper fit to the BMW body structure. Original manufacturing translates into:

• dimensional consistency with other body elements,
• appropriate rigidity in the sill area,
• easier installation compared to aftermarket replacements with uncertain tolerances.

This solution is particularly beneficial for repairs where maintaining the factory look and proper fitment of elements without additional modifications is a priority.

Selection support and additional technical information

Dedicated manufacturer markings and interchangeable numbers are available for this side skirt, which facilitates verification of compatibility with a specific BMW E90 LCI configuration. In case of doubt, it is worth comparing the data with the vehicle documentation or consulting a specialist to select an element that exactly matches the equipment version and styling package.

If you want to better understand the importance of original components in body repairs and learn about the benefits of choosing used OEM parts, read the article on quality assurance and the safety of original used car parts.

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, trims, or additional strips, check out the available parts in the BMW Sill strips category.