BMW X5 E53 Aluminium Side Step Foot Plate Running Board Right O/S 8403078

BMW X5 E53 Aluminium Side Step Foot Plate Running Board Right O/S is an original body component from the Side Skirts category, designed for installation on the right side of the vehicle. The aluminium construction provides an aesthetic finish to the sill and solid protection for the entry area against typical operational damage. This is a practical solution for BMW X5 E53 users who want to maintain a consistent body appearance and proper fitment of components.

Specifications and technical data

• SKU: 8403078-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8403078
• Substitutable numbers: 51718403078, 8403078, 51710392736, 0392736, BG
• Location on the vehicle: Right
• Category: Running Boards & Side Bars

Purpose and function of the side skirt

The presented side skirt has been designed specifically for the BMW X5 E53 generation as a finishing and protective element for the right-side sill. Its purpose is:

• protecting the sill area from scratches and minor mechanical damage when entering and exiting the vehicle,
• providing a stable closure of the body line at the bottom of the doors,
• maintaining the vehicle's factory visual character.

Thanks to its fitment for the specific body model, the trim works with the original mounting points, which facilitates installation and ensures proper alignment with the sill and door seals.

Construction and properties of the aluminium cover

The aluminium finish of the side skirt gives the cabin entry area a more solid and orderly appearance, while also contributing to resistance against typical operational loads. The construction was developed as an OEM component, which means:

• maintaining the correct geometry and profile matched to the BMW X5 E53 sill,
• compatibility with factory body and trim elements,
• visual consistency with other exterior components of the vehicle.

Placement on the right side of the vehicle allows for precise fitting to the specific side of the body, without the need for modifications or adapting universal solutions.

Condition of the component and service application

The side skirt is offered as a used original component, which in practice means maintaining factory construction and compatibility while optimizing repair costs. This type of part is particularly useful in situations where:

• the existing trim has suffered mechanical damage or deformation,
• it is necessary to restore the consistent appearance of the sill area after body and paint repairs,
• the user wants to maintain the original finish character instead of using universal replacements.

Using an original side skirt on the right side allows for reducing the risk of installation problems and unnatural gaps between body panels.

Benefits of installation in the BMW X5 E53

Replacing a damaged or missing side skirt with an original aluminium cover brings a number of practical benefits. The most important include:

• restoring the aesthetics of the sill – no visual defects in the lower part of the body,
• protection of the sill edge against further wear,
• maintaining factory fitment of body components,
• the possibility of performing repairs in a manner similar to BMW service standards.

Thanks to this solution, the user can orderly recreate the appearance of the cabin entry area, which is important both for daily use and for the potential resale of the vehicle.

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 trims, check the available parts in the BMW Side Skirts category.