Audi A5 8T Coupe Rear Bumper Diffuser Lower Centre Trim Cover Panel 8T0807521K

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A5 8T Coupe Rear Bumper Diffuser Lower Centre Trim Cover Panel is an original body component designed for installation in the rear section of the vehicle. This lower, central bumper trim improves the aerodynamic consistency of the rear bodywork while restoring the factory look of the car following a collision or modifications. Thanks to its design, which adheres to the manufacturer's specifications, it provides a reliable foundation for professional repair or aesthetic restoration.

Specifications and technical data

• SKU: 8T0807521K
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T0807521K
• Substitutable numbers: 8T0807521K, 8T0 807 521 K
• Location on the vehicle: Rear
• Category: Bumpers & Reinforcements

Purpose and function of the component

The described diffuser is the lower, central part of the rear bumper in the Audi A5 8T Coupe generation. Its task is to organize the airflow under the vehicle and close off the bumper structure from below, which influences body stability at higher speeds and reduces air turbulence behind the car.

The component is mounted in the rear body zone, along the vehicle's axis, between the other bumper segments. Proper fitment of this part is important both for the mechanical protection of the lower bumper sections and for maintaining uniform mounting gaps, which are essential for precise body restoration.

Benefits of using an original diffuser

Choosing an original rear bumper diffuser for the Audi A5 8T Coupe allows you to maintain the factory geometry and body lines. A properly selected component:

• facilitates hassle-free installation thanks to compatibility with factory mounting points,
• ensures proper airflow in the rear undercarriage area,
• restores a consistent look to the lower edge of the bumper after damage or removal,
• reduces the risk of improper fitment, which is typical for lower-quality aftermarket replacements.

For body shops and service centers specializing in the Audi brand, using such a component means a predictable installation process and less need for additional adjustments.

Characteristics of the used component

The diffuser comes from the Bumpers and reinforcements group and is a used part, which in practice represents a favorable compromise between repair costs and maintaining the original construction. This type of component is particularly useful for:

• post-accident repairs, when the lower part of the rear bumper has been damaged,
• restoring the car to a condition close to factory specifications after stylistic modifications,
• economical body restoration in daily-driven vehicles.

A used diffuser allows you to maintain the original Audi body shape while reducing costs compared to new parts from an authorized dealership.

Practical application in service

The component is designed for installation in the rear section of the Audi A5 8T Coupe, making it suitable for both professional service centers and independent workshops specializing in the Audi brand. Thanks to the retention of the factory design, the diffuser works well with other rear bumper components, which makes it easier to achieve even gaps and proper fitment of the entire section.

If you are planning a comprehensive repair or upgrade of the rear body zone in your Audi and need other elements from the same group, such as bumper beams, reinforcements, or additional covers, check out the available parts in the Audi Bumpers and reinforcements category.

Support in choosing used parts

When selecting a used rear bumper diffuser, it is worth paying attention to compatibility with the specific body version and the condition of the mounts and working edges. If you want to better assess when purchasing a used body component is a reasonable solution and when it is better to consider other options, the following article will be helpful: Renovation and repair of German cars – which used parts are worth buying and which should you avoid?.