Audi TT 8N Front Wheel Hub Bearing Housing Knuckle Left N/S 8N0407255H

Audi TT 8N Front Wheel Hub Bearing Housing Knuckle Left N/S is a suspension component responsible for precise wheel guidance and a stable connection between the hub, bearing, and suspension. Thanks to its factory geometry and design compliant with the manufacturer's specifications, this steering knuckle ensures proper interaction with the steering and suspension systems, which translates into safe vehicle handling and predictable road behavior. It is a practical choice for users looking for a proven component for the front left axle.

Specifications and technical data

• SKU: 8N0407255H
• Mark: Audi
• Condition: Used
• OEM Part Number: 8N0407255H
• Substitutable numbers: 8N0407255H, 8N0 407 255 H
• Location on the vehicle: Front, Left
• Category: Wheel Bearings, Hubs & Seals

Purpose and function in the vehicle

The front left steering knuckle in the Audi TT 8N operates in a critical area of the suspension, responsible for maintaining the correct position of the hub and bearing relative to the shock absorber, control arm, and steering system components. A correctly selected part helps maintain:

• stable front wheel geometry,
• even tire wear,
• proper interaction with the steering system,
• appropriate stiffness of connections in the hub and bearing mounting area.

Thanks to its dedicated placement on the vehicle on the front – left side, the component is structurally matched to the Audi TT 8N suspension architecture, which facilitates installation and reduces the risk of wheel alignment issues.

Technical category: Wheel bearings, hubs, and bushings

The steering knuckle belongs to the group of elements defined as Wheel bearings, hubs, and bushings, i.e., sub-assemblies responsible for transferring loads between the wheel and the suspension. In practice, this means it works directly with the wheel bearing, hub, and mounting elements, creating a rigid yet precise load-bearing system. Proper selection of this part is important for:

• maintaining wheel rotation axiality,
• reducing play in the suspension system,
• maintaining driving comfort and directional stability.

Characteristics and application benefits

The presented steering knuckle has been designed to work with the factory Audi suspension, which allows for maintaining the parameters intended by the vehicle manufacturer. Key benefits of using this component include:

• compatibility with the factory Audi TT 8N suspension system,
• the ability to restore the correct geometry of the front left axle,
• stable mounting of the wheel hub and bearing,
• reduction of unwanted vibrations and play in the wheel mounting area.

Its placement on the vehicle in the front axle area on the driver's side means that this element has a direct impact on perceived handling precision, especially during braking, cornering, and driving at higher speeds.

Used condition – an informed technical choice

The steering knuckle is offered in used condition, which represents a reasonable compromise between repair costs and maintaining appropriate performance parameters. In many cases, using a proven component from the secondary market allows for effectively restoring the proper operation of the suspension system without the need to invest in a new component. For users who want to better understand the specifics of such solutions, the article Used car parts: Myths and facts you need to know will be helpful, where common concerns and real benefits resulting from choosing second-hand parts are discussed.

If you care about even more informed selection of suspension elements and want to avoid mistakes when choosing components for your car, it is also worth reading the guide No more bad purchases! How to professionally select used car parts while saving time and nerves, where you will find practical tips regarding compatibility and OEM markings.

Expanding repairs within the Audi suspension system

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 hubs, bearings, or bushings, check out the available parts in the Audi wheel bearings, hubs, and bushings category.