BMW E90 E91 LCI E90 E91 Underfloor Under Body Coating Aerokit 7070141

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E90 E91 LCI E90 E91 Underfloor Under Body Coating Aerokit is a body component designed for the rear undercarriage, which improves floor area protection and airflow stability. Thanks to its fitment for the BMW 3 Series E90/E91 chassis, the cover works in conjunction with the aerodynamic package, supporting safe and predictable undercarriage performance. It is a practical solution for users who want to maintain the integrity of the aerodynamic and protective system in their vehicle.

Specifications and technical data

• SKU: 7070141
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7070141
• Substitutable numbers: 51717070141, 7070141, 51757181652, 7181652
• Location on the vehicle: Rear
• Category: Other Exterior Parts & Accessories

Purpose and function in the undercarriage system

The described cover is a component mounted in the rear part of the vehicle, in the floor area, where it is responsible for shielding the filter zone and a section of the underbody plate. Its task is to limit the direct exposure of components to dirt, water, and minor mechanical damage, as well as to streamline airflow under the car. For vehicles equipped with Aerokit aerodynamic packages, maintaining the completeness of such panels is important for handling stability at higher speeds.

Compatibility and fitment for BMW

The cover has been designed with the BMW 3 Series E90/E91 chassis construction in mind, which ensures proper fitment with factory mounting points. Its original BMW origin helps maintain dimensional and material compatibility with other floor system components. As a result, installation is straightforward, with no need for modifications or reshaping.

Performance characteristics of the component

As a part of the undercarriage group, the cover creates a protective barrier for the rear floor zone, which is particularly important in daily use on roads with poorer surface quality. Maintaining the completeness of undercarriage panels helps reduce the accumulation of debris around the filter and other components located in this part of the vehicle. For the user, this means more predictable operating conditions for components and easier maintenance in the service area.

Condition and service application

The item is offered as a used original part, which allows for an economical replacement of a damaged or missing cover while maintaining compliance with the factory design. Such components are often used in post-accident repairs, replacing missing parts after disassembly, or restoring the completeness of aerodynamic packages. Replacing a worn cover with an original counterpart helps maintain the consistency of the undercarriage system and improves the overall functionality of the rear zone.

Expanding the BMW protective system

If you are planning a comprehensive repair or upgrade of the undercarriage zone in your BMW and need other elements from the same group, such as covers, plates, or additional aerodynamic panels, check out the available parts in the Other BMW category.

Technical knowledge and development of undercarriage systems

For drivers interested in comparing solutions used in different brands and model versions, including sports variants, material discussing differences in engine, brake, and chassis construction may be useful. In this context, it is worth reading the article Audi RS vs other models – what is hidden under the hood and the undercarriage?, which shows how manufacturers use shielding and aerodynamic elements in different vehicle segments.