BMW 3 Series E90 E90N E91 E91N Impact Protection Right Sill O/S 7146730

BMW 3 Series E90 E90N E91 E91N Impact Protection Right Sill is an original body component designed to protect the right side of the sill in 3 Series models. Thanks to its factory-fit design for BMW structures, it ensures consistent installation and maintains the correct geometry of the sill area. This is a practical solution for users who want to restore the side body protection in a controlled and technically correct manner following mechanical damage.

Specifications and technical data

• SKU: 7146730
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7146730
• Substitutable numbers: 51777146730, 7146730
• Location on the vehicle: Right
• Category: Other Interior Parts & Accessories

Purpose and function of the sill component

The right sill protection for the BMW E90/E91 series is responsible for absorbing some of the loads resulting from minor impacts and contact with obstacles in the lower body area. This component stabilizes the sill area, supports the maintenance of the correct side line, and helps limit the spread of damage to adjacent body components.

The placement on the right side of the vehicle allows for precise alignment with factory mounting points, which facilitates installation and reduces the need for additional bodywork modifications. As a result, the part works well both for post-accident repairs and for the technical restoration of the sill area.

Benefits of using an original BMW component

Using the original sill protection for the BMW E90/E91 provides a number of practical advantages in daily operation:

• factory fit for the 3 Series body structure,
• maintenance of the correct geometry and side line of the vehicle,
• better compatibility with adjacent body elements and mounts,
• reduced risk of stress resulting from improper fitment,
• more predictable behavior of the sill area under operational loads.

Thanks to this, the part serves as a functional addition to the factory structure, allowing for a technically correct reconstruction of the side protection in the sill area.

Installation characteristics and application

The right sill protection is intended for installation in the dedicated location on the vehicle, in accordance with the factory BMW mounting layout. The design of the component allows for its integration with the existing body structure without the need for significant changes to the body geometry. This solution is particularly useful for:

• repairs after mechanical damage to the lower side of the vehicle,
• restoring the continuity of sill protection after previous bodywork interventions,
• preparing the car for further painting or renovation work.

Due to its factory-intended use for a specific side of the vehicle, the part helps maintain structural consistency and facilitates quality control of the performed repair.

Condition and use in service practice

The product comes from a group of used components, making it an attractive solution for workshops and users looking for a technically sound part on a reasonable budget. In service practice, this type of component is often used for:

• local repairs of the side body area,
• restoring sill protection after parking collisions,
• preparing the vehicle for further structural or painting work.

By maintaining the original geometry, the component allows for a more predictable installation process and makes it easier to fit other components in the sill area.

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 moldings, check the available parts in the Other BMW category.

Technical support and knowledge development

When working on the body, suspension, or drivetrain, it is worth knowing the structural differences between individual model lines and high-performance versions. A good starting point for expanding your knowledge about solutions used in premium cars is the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the impact of changes in the engine, brakes, and chassis on vehicle characteristics.