Audi A8 4H Wheel Hub Carrier Front Right O/S Brake Disc Plate 4H0407242M

Audi A8 4H Wheel Hub Carrier Front Right O/S Brake Disc Plate is an original, used front right wheel hub carrier with a brake disc dust shield, designed for Audi A8 4H models. This part belongs to the Bearings, wheel hubs and bushings group and is a key load-bearing component of the front suspension, responsible for precise wheel guidance and correct positioning of the brake disc.

Specifications and technical data

• SKU: 4H0407254M
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0407254M
• Substitutable numbers: 4H0407254M, 4H0 407 254 M, 4H0407242M, 4H0 407 242 M
• Location on the vehicle: Front, Right
• Part type: Wheel Hub
• Category: Wheel Bearings, Hubs & Seals

Purpose and function in the running gear

The wheel hub carrier is mounted on the front, right side of the vehicle and works in conjunction with suspension, steering, and braking system components. It is responsible for:

• stable mounting of the wheel hub and wheel bearing,
• maintaining the correct geometry of the front axle,
• precise wheel guidance during driving and braking,
• mounting the brake disc dust shield, which protects the disc from contamination. Thanks to the factory Audi design, dimensional compatibility with the original A8 4H suspension is maintained, which facilitates installation and allows for predictable vehicle handling.

Benefits of using an original Audi component

The original hub carrier from the Bearings, wheel hubs and bushings group ensures a perfect fit to factory mounting points and compatibility with stock control arms, ball joints, and brake calipers. In practice, this means:

• no modifications required during installation,
• retention of factory suspension angles after proper geometry adjustment,
• consistent braking system performance due to the integrated disc shield. Choosing a used, original component allows for reduced repair costs while maintaining the design intended by the vehicle manufacturer.

Application in suspension repairs and diagnostics

The front right wheel hub carrier is particularly important for repairs following collisions, mechanical suspension damage, or excessive wear of load-bearing components. Replacement of this sub-assembly is recommended, among other things, when:

• deformations occur after hitting a curb or obstacle,
• cracks are found in the area of control arm or shock absorber mounts,
• it is impossible to correctly set the front axle geometry due to structural damage. Using an original hub carrier helps restore correct vehicle handling, even tire wear, and stability during braking and high-speed driving.

Integration with other wheel assembly components

The component works with the hub, bearing, brake disc, caliper, and control arms to form a complete wheel assembly. A correctly selected hub carrier:

• ensures the alignment of the disc relative to the caliper,
• maintains the proper position of the bearing and hub relative to the body,
• reduces vibrations transmitted to the steering system. As a result, the Audi A8 4H running gear maintains handling characteristics consistent with the manufacturer's specifications, which is important for both comfort and safety.

Expanding the scope of repairs – related components

If you are planning a comprehensive repair or upgrade of the wheel and suspension area in your Audi and need other elements from the same group, such as hubs, bearings, or bushings, check the available parts in the Audi Bearings, wheel hubs and bushings category. When selecting used suspension components, it is also worth considering the general principles of choosing original parts from dismantling instead of cheap replacements – discussed in more detail in the article The most popular repairs in Ford cars – why cheap replacements are a false economy, the conclusions of which can also be applied to other brands, including Audi.