Audi A4 B9 Rear Wheel Arch Guard Liner Cover Left N/S 8W0810172K

Audi A4 B9 Rear Wheel Arch Guard Liner Cover Left N/S is an original body component designed to protect the inner part of the wheel arch and the sill area. This rear left wheel arch liner effectively limits the contact of water, mud, and debris with suspension and body components, which promotes longer component durability and stable driving characteristics. Thanks to its factory fit, it ensures proper airflow and dirt management around the rear axle.

Specifications and technical data

• SKU: 8W0810171K
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0810171K
• Substitutable numbers: 8W0810171K, 8W0 810 171 K
• Location on the vehicle: Rear, Left
• Fuel type: Petrol
• Part type: Splash Guard
• Category: Splash Guards & Mud Flaps

Purpose and function in the Audi A4 B9

The presented wheel arch guard is designed specifically for the rear body section on the left side of the Audi A4 B9 generation model with a petrol engine. The component acts as a barrier between the wheel and the body structure, limiting the accumulation of moisture and dirt in the wheel arch zone and around the suspension mounts.

Thanks to its precise profile, the guard works with factory mounting points, which facilitates installation and allows for maintaining the original wheel arch geometry. The proper shaping of the surface also helps reduce water spray, which is important for the operation of brake system components and the protection of anti-corrosion coatings.

Construction and body fitment

The rear left wheel arch guard for the Audi A4 B9 belongs to the group of wheel arch components known as Mudflaps, responsible for controlling water and mud spray around the wheel. The construction is profiled for the specific body shape, which ensures a tight fit to the inner part of the wheel arch and compatibility with factory mounts.

The appropriately selected material and shape help dampen minor stone impacts and limit direct contact of contaminants with metal elements. Such a solution supports the maintenance of stable operating conditions for the rear suspension and reduces the risk of accelerated corrosion in the wheel arch zone.

Benefits of using an original wheel arch guard

Using a factory wheel arch guard in an Audi A4 B9 provides a number of practical operational benefits:

• maintaining proper protection of the rear body section against water, mud, and road salt,
• limiting the accumulation of contaminants in the area of suspension mounts and body components,
• maintaining factory fit and wheel arch geometry,
• support for stable operating conditions of the rear axle running gear.

For users operating the vehicle in varied road conditions, effective wheel arch zone protection is particularly important, as it influences the long-term condition of the body structure and daily driving comfort.

Characteristics of the used component

The offered wheel arch guard is a used component, sourced from the dismantling of an Audi vehicle. This type of component allows for an economical replacement of a damaged or missing guard while maintaining the original manufacturing standard. Choosing a second-hand part is often a beneficial solution for accident repairs or restoring full wheel arch functionality after mechanical damage.

Before installation, it is recommended to verify the condition of the mounting points on the vehicle and compare the shape of the component with the currently installed opposite side, which will facilitate correct seating and ensure a tight fit to the body.

Extending wheel arch protection in Audi

If you are planning a comprehensive repair or upgrade of the rear wheel arch zone in your Audi and need other elements from the same group, such as additional guards, wheel arch panels, or supplementary mudflaps, check the available parts in the Audi Mudflaps category.

For drivers interested in a broader approach to using second-hand components, including drivetrain elements and associated parts, a guide describing the practical aspects of purchasing used parts may be useful – more information can be found in the article Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.