Audi A5 S5 8T Front Steering Knuckle Wheel Hub Bearing Right O/S 8K0407254AA

Audi A5 S5 8T Front Steering Knuckle Wheel Hub Bearing Right O/S is an original suspension component designed for installation on the front axle, passenger side. Thanks to its factory geometry and robust construction, it ensures stable handling, precise wheel alignment, and safe integration with the suspension and steering system, serving as a functional base for the hub, bearing, and suspension mounts.

Specifications and technical data

• SKU: 8K0407254AA
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0407254AA
• Substitutable numbers: 8K0407254AA, 8K0 407 254 AA
• Location on the vehicle: Front, Right
• Category: Steering Knuckles

Purpose and function in the suspension system

The described front right steering knuckle for Audi A5 / S5 8T operates at a critical point in the suspension system, connecting suspension components, the steering system, and the wheel hub with the bearing. It is responsible for:

• maintaining the correct front axle geometry,
• stable seating of the wheel hub and bearing,
• secure wheel guidance throughout the suspension travel range,
• transferring loads from the road surface to the vehicle body.

Thanks to its factory design, the steering knuckle maintains the parameters specified by the manufacturer, which is crucial for correct camber and toe settings, as well as for predictable vehicle behavior during braking and cornering.

Construction and key technical features

The steering knuckle was designed specifically for the Audi A5 / S5 8T platform, taking into account the characteristics of the front suspension. The component integrates the following into a single unit:

• wheel hub mounting with bearing,
• mounting points for control arms and suspension components,
• brackets for steering system elements.

This solution ensures connection rigidity and limits unwanted deflection under load. Precision mounting sockets facilitate correct installation of the steering knuckle on the vehicle and allow for maintaining factory assembly tolerances, which directly impacts ride comfort and tire longevity.

Vehicle placement and compatibility

The component is intended for installation on the front axle on the right side, which is significant both in terms of geometry and the arrangement of mounting points. Using the correct steering knuckle on the appropriate side of the vehicle minimizes the risk of issues with wheel alignment, uneven tire wear, or improper suspension operation.

As a part from the Steering Knuckles group for Audi, the product is structurally matched to the suspension system of this model, allowing for consistency with other suspension and steering components.

Practical application and installation benefits

The steering knuckle with hub and bearing is particularly useful in situations where mechanical damage has occurred (e.g., after a collision, hitting a curb, or a deep pothole) or symptoms such as unstable handling, vehicle pulling, or uneven tire wear appear. Replacing the complete component allows you to:

• restore correct front axle geometry,
• reduce play within wheel mounts,
• limit vibrations transmitted to the body,
• increase the predictability of the car's behavior in corners.

Using an original component provides a reasonable compromise between repair costs and maintaining factory structural parameters, which is particularly important in cars of the Audi A5 / S5 class.

Audi Steering Knuckles – expansion and suspension system modernization

If you are planning a comprehensive repair or modernization of the front suspension area in your Audi and need other elements from the same group, such as left-side steering knuckles, additional hubs, or supplementary bearings, check the available parts in the Audi Steering Knuckles category.

For drivers who are simultaneously servicing the drivetrain and want to better understand the relationship between suspension operation, power transmission, and ride comfort, the guide article on clutch and dual-mass flywheel diagnostics and selecting drivetrain components may be helpful, where practical aspects of selecting used components are also discussed.