Audi A4 B8 Rear Wheel Hub Left N/S Bearing Knuckle Sleeve Ankle 8K0505431AK

Audi A4 B8 Rear Wheel Hub Left N/S Bearing Knuckle Sleeve Ankle is a component from the Shock absorbers and struts group, designed for the rear left suspension of Audi vehicles. This is a used component that allows for a technically correct repair of the chassis, restoring proper geometry and vehicle handling stability.

Specifications and technical data

• SKU: 8K0505431AK
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0505431AK
• Substitutable numbers: 8K0505431AK, 8K0 505 431 AK
• Location on the vehicle: Rear, Left
• Category: Shocks, Struts & Assemblies

Purpose and function in the suspension

The presented rear left steering knuckle is dedicated to the rear axle on the driver's side. It is responsible for the stable mounting of suspension elements and cooperation with the shock-absorbing system, which translates into predictable vehicle behavior during driving, braking, and traversing uneven surfaces.

Thanks to its precise fit to the Audi design, this part ensures the correct position of the wheel relative to the body, which is important for both suspension geometry and even tire wear. This solution is particularly important for post-collision repairs, replacing damaged elements, or restoring factory handling parameters.

Benefits of using a dedicated steering knuckle

Using a steering knuckle designed specifically for the rear left side of the vehicle reduces the risk of alignment issues and unwanted play in the suspension. In practice, this means:

• more predictable vehicle handling in corners,
• more stable behavior at higher speeds,
• lower loads on other suspension components,
• better cooperation with shock absorbers and other components from the Shock absorbers and struts group.

For the user, this translates into higher driving comfort and more consistent vehicle reactions to steering inputs.

Condition and service application

The steering knuckle comes from dismantling and is offered as a used part, which is a reasonable compromise between repair costs and maintaining appropriate performance parameters. This type of component is often chosen for post-accident repairs, replacing elements after mechanical damage, or when regenerating the rear suspension.

Before installation, it is recommended to perform a standard inspection of the element in a workshop environment and subsequently set the suspension geometry to fully utilize the potential of the part and ensure proper vehicle handling.

Technical support and additional materials

If you want to better understand the relationships between the steering knuckle, shock absorbers, and other chassis components, a guide describing the construction and operation of the suspension will be helpful – check out the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses practical aspects of diagnostics and service.

If you are planning a comprehensive repair or upgrade of the suspension area in your Audi and need other elements from the same group, such as struts, mounts, or components working with the vibration damping system, check the available parts in the Audi shock absorbers and struts category.