Audi A4 B9 Wheel Arch Front Right O/S Housing Cover Splash Guard 8W0821172G

Audi A4 B9 Wheel Arch Front Right O/S Housing Cover Splash Guard is a precisely fitted wheel arch liner that protects suspension and body components from water, mud, and debris. This original Audi component ensures proper airflow management and secures critical structural points in the front right section of the vehicle. It is a practical solution for drivers who want to maintain the bodywork in good technical and visual condition.

Specifications and technical data

• SKU: 8W0821172G
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0821172G
• Substitutable numbers: 8W0821172G, 8W0 821 172 G
• Location on the vehicle: Front, Right
• Category: Splash Guards & Mud Flaps

Purpose and function of the wheel arch liner

The described wheel arch liner is designed for installation in the front right section of the Audi A4 B9 generation body. Its tasks include:

• protecting the inner part of the fender and sills from corrosion caused by water and road salt,
• limiting the ingress of stones and other debris into the suspension chamber,
• stabilizing airflow around the wheel, which promotes the proper operation of suspension components,
• keeping the area around electrical installations and mounts in the front of the vehicle clean.

Thanks to its properly contoured design, the wheel arch liner works with factory mounting points, which facilitates installation and ensures proper fitment to the body.

Construction and fitment for Audi A4 B9

The wheel arch liner belongs to the group of body components classified as Mud Flaps, responsible for limiting water and mud spray from under the wheel. The shape of the component is matched to the geometry of the front bumper, fender, and sills of the Audi A4 B9, which allows for maintaining a consistent body line and proper alignment with adjacent panels.

The arrangement of mounting holes allows for the use of factory clips and screws, and the appropriate stiffness of the material ensures stability while driving in varied road conditions. This solution is particularly beneficial when replacing a damaged wheel arch liner after a collision, stone impact, or long-term wear.

Product condition and benefits of use

The item comes from the used parts category, which allows for an economical vehicle repair while maintaining characteristics close to factory standards. Replacing the wheel arch liner with an original component of the same design helps to:

• restore proper protection of the front right wheel arch,
• reduce the risk of accelerated corrosion in the wheel arch and sill zone,
• maintain body aesthetics after bodywork repairs,
• preserve compatibility with other shielding elements and mud flaps.

For workshops and private users, this means the possibility of efficient repair without the need to adjust replacements with uncertain geometry.

Application in the wheel arch zone and related components

The wheel arch liner works with other components within the front suspension and body, such as mud flaps, underbody covers, or sill elements. A correctly selected and installed element helps maintain the integrity of the entire wheel arch zone, which is important both for mechanical protection and for subsequent service work (e.g., when working on shock absorbers or brake lines).

If you are planning a comprehensive repair or upgrade of the wheel arch zone in your Audi and need other elements from the same group, such as additional covers, mud flaps, or protective panels, check the available parts in the Audi Mud Flaps category.

Summary

Audi A4 B9 Wheel Arch Front Right O/S Housing Cover Splash Guard is a practical choice for repairs following mechanical damage or corrosion within the wheel arch. A properly fitted design, compatibility with factory mounting points, and protective function in the wheel arch zone make it a beneficial solution for both individual users and professional body and mechanical workshops. By using an original Audi component, you can effectively restore proper operating conditions for suspension and body elements in the front right section of the vehicle.