BMW F30 F31 Side Skirt Sill Strip Cover 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 F30 F31 Side Skirt Sill Strip Cover Left N/S Black Sapphire Metallic - 475 is an original body component from the Side Skirts category, designed for installation on the left side of 3 Series F30/F31 models. The Black Sapphire Metallic - 475 paint finish ensures visual consistency with the factory BMW bodywork and facilitates easy component matching during post-accident repairs or restoration.

Specifications and technical data

• SKU: 7312751-BS3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7312751
• Substitutable numbers: 51777312751, 7312751, BG
• Location on the vehicle: Left
• Color: Black Sapphire Metallic - 475
• Category: Running Boards & Side Bars

Purpose and function of the component

The left side skirt in Black Sapphire Metallic plays a key role in protecting the lower part of the bodywork from mechanical damage and external factors. This component stabilizes the side line of the body, ensuring proper door edge alignment and a harmonious flow of factory body lines.

As a part from the Side Skirts category, the side skirt is responsible for:

• protecting the sill area from stone chips, dirt, and corrosion,
• maintaining the correct geometry of the side body section,
• providing an aesthetic finish to the lower door line on the driver's side.

Color and matching of Black Sapphire Metallic - 475

The Black Sapphire Metallic - 475 finish is characteristic of many BMW 3 Series F30/F31 configurations, which facilitates the integration of the component with the existing paintwork. Thanks to the factory shade, it is possible to limit the scope of painting work, and in many cases, maintain visual consistency without the need for full repainting of the entire side of the vehicle.

The metallic structure of the paint provides appropriate color depth and matches factory BMW standards, which is important both for body and paint repairs and for restoring the original appearance of the car after operational damage.

Placement on the vehicle and assembly aspects

The component is designed for installation on the left side of the vehicle, in the sill area between the front and rear wheel arches. This placement requires precise fitting with the doors and other side panels, which is why using an original BMW part helps maintain correct assembly gaps and body geometry.

The left side skirt in this configuration is suitable for use during:

• repairs after side collisions,
• local corrosion repairs in the lower part of the body,
• visual renovation of the vehicle when the existing component is damaged or deformed.

Characteristics of the used product

The offered side skirt is a used component, which in practice means it retains its original geometry and construction while offering an attractive cost-to-quality ratio. This type of part allows for a technically correct repair using a component from dismantling, while maintaining the assembly standards appropriate for BMW.

Choosing an original, used side skirt is particularly beneficial where matching factory mounting points and compatibility with other side body components is essential, without the need for structural modifications.

Integration with other BMW sill area components

The left Black Sapphire side skirt works with other side body components – covers, trims, and additional decorative strips. This makes it possible to recreate the complete sill line on one side of the vehicle while maintaining stylistic and technical consistency.

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 the available parts in the BMW Side Skirts category.

Additional technical information and expert knowledge

When planning broader vehicle modifications – both in the area of the bodywork and the drivetrain – it is worth using reliable sources of technical knowledge. In the case of advanced engine and turbocharging system upgrades, an article describing safe power increases in sports models may be helpful, available here: 2.5 TFSI DAZA – how to safely increase the power of an Audi RS3 by buying used turbochargers.

Such materials allow for better planning of the scope of work, selecting appropriate components, and understanding the relationships between individual vehicle systems, which translates into more informed purchasing decisions, including in the area of body components.