BMW F80 M3 F82 F83 M4 Rear Bumper Diffuser Insert Mineral Grey -B39 8058758

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F80 M3 F82 F83 M4 Rear Bumper Diffuser Insert Mineral Grey -B39 is an original rear bumper diffuser insert designed for BMW M-series sports models. The component in Mineral Grey B39 color allows for maintaining a consistent body style and proper airflow in the rear of the vehicle, which is important both visually and functionally.

Specifications and technical data

• SKU: 8058758
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8058758
• Substitutable numbers: 8058758, 51128058758
• Location on the vehicle: Rear
• Part type: Bumper Insert
• Category: Bumper Inserts & Covers

Purpose and function of the component

The presented diffuser insert is designed for installation in the rear body area, in the lower part of the bumper. It is responsible for the aesthetic finish of the area around the exhaust system and for organizing the airflow under the car. Thanks to its factory geometry, it ensures a proper fit with the bumper line and other aerodynamic elements.

As a part from the Bumper inserts and covers group, this diffuser acts as protection for the lower edge of the bumper, reducing the risk of mechanical damage during daily use and dynamic driving.

Compatibility with BMW M3 / M4 models

The insert has been developed specifically for the F-generation of the M-series, which translates into a precise fit for the factory bumper in BMW M3 F80 as well as BMW M4 F82 and F83 models. The design intended for these body versions allows for maintaining the original character of the vehicle's rear line, without the need for modifications or adaptations.

Proper fitment for specific body variants facilitates installation and minimizes the risk of improper seating of the component, which is important for both appearance and mounting stability while driving.

Visual and material characteristics

The Mineral Grey B39 color is a factory shade used by BMW, thanks to which the diffuser insert blends harmoniously with the body paint in this color or provides a consistent accent in other configurations. The original surface ensures uniform light reflection and an aesthetic transition between the bumper and the lower part of the body.

As an OEM part, the diffuser is made of plastic selected for resistance to road conditions, temperature changes, and typical aerodynamic loads. The design provided by the vehicle manufacturer promotes shape stability and durability of the mounts.

Condition, origin, and service application

The offered diffuser insert comes from disassembly and is an original BMW component, which is important for post-accident repairs and restoring the car to factory specifications. The used component allows for an economical restoration of the rear part of the body while maintaining compliance with the manufacturer's design.

This type of solution works well both when replacing a damaged diffuser after a collision and when supplementing a missing element in the vehicle restoration process. Thanks to the preservation of factory geometry, it is possible to use existing mounting points in the bumper.

Support for body repairs and parts selection

During body and paint work in the rear of the vehicle, it is worth considering the completeness of bumper covers and inserts to avoid unwanted air noise and improve the visual consistency of the bumper zone. This type of diffuser insert is an important addition to the repair, especially in sports cars such as the M3 and M4.

If you want to better plan your body repair using parts from disassembly, practical tips on selection and installation can be found in the article Bodywork and chassis – post-accident repairs using parts from disassembly, which discusses, among other things, working with original body components.

If you are planning a comprehensive repair or upgrade of the rear bumper zone in your BMW and need other elements from the same group, such as covers, inserts, or additional panels, check the available parts in the BMW Bumper inserts and covers category.