Audi A4 B9 Underfloor Undertray Guard Rear Side Trim Panel Shield 8W0825217D

Visual condition of the part

The product shows signs of use visible in the photos.

The Audi A4 B9 Underfloor Undertray Guard Rear Side Trim Panel Shield is an original body component designed as a protective floor shield for the rear section of the vehicle. It protects critical areas of the undercarriage from water, dirt, and minor mechanical damage, supporting stable vehicle operation. Using an OEM part allows you to maintain factory geometry and fitment without the need for aftermarket replacements of uncertain quality.

Specifications and technical data

• SKU: 8W0825217D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0825217D
• Substitutable numbers: 8W0825217D, 8W0 825 217 D
• Location on the vehicle: Rear
• Part type: Splash Guard
• Category: Splash Guards & Mud Flaps

Purpose and function of the component

The described underfloor guard is dedicated to the Audi A4 B9 generation model and operates in the rear body zone. Its tasks include:

• limiting direct contact of the floor with water, mud, and road salt,
• protecting structural elements and mounts in the rear part of the undercarriage,
• stabilizing airflow under the car, which promotes smooth driving at higher speeds,
• complementing the factory package of shields and aerodynamic panels.

Thanks to its precise geometry, the shield works in harmony with other underbody components, facilitating installation and subsequent maintenance.

Construction and fitment for the Audi A4 B9

The panel has been designed specifically for the floor construction of the Audi A4 B9, taking into account factory mounting points in the rear of the vehicle. This means that it:

• fits original brackets and clips without the need for modifications,
• maintains the correct embossments and shape adapted to the underbody lines,
• does not interfere with other shields, mudguards, or suspension components.

As an original Audi brand component, the panel ensures a consistent appearance and compatibility with factory equipment, which is essential both for post-accident repairs and for restoring the car to a factory-like condition.

Condition, origin, and benefits of choosing a used part

The item comes from disassembly and is offered as a used part, which allows for a significant reduction in repair costs while maintaining the manufacturer's original specifications. In practice, this means:

• factory fitment without installation issues,
• preservation of the original undercarriage structure,
• an economical solution when replacing a damaged shield.

For workshops and private users, choosing a used OEM panel is a reasonable compromise between price and quality, especially for repairs following mechanical damage or local corrosion.

Application in the rear zone of the vehicle

The shield operates in the rear part of the undercarriage, in the immediate vicinity of the zone exposed to water and debris thrown from under the wheels. A properly installed panel:

• limits the splashing of water and mud onto structural elements,
• supports the function of mudguards and other wheel arch liners,
• helps maintain a more orderly airflow under the car.

This is particularly important in daily operation when the car is driven on roads of varying quality and in changing weather conditions.

Complementary elements and expanding undercarriage protection

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 additional shields, protective panels, or mudguards, check the available parts in the Audi Mudguards category.

If you are considering further improving the comfort and overall value of the vehicle, it is worth checking out the guide on replacing interior equipment – you will find practical tips in the article Interior metamorphosis: how branded seats from disassembly improve comfort and car value.