Audi R8 Front Right Wishbone Control Arm O/S 420407508

The Audi R8 Front Right Wishbone Control Arm O/S is a component from the Control arms and ball joints group, designed for operation in the front suspension on the passenger side. The original Audi design ensures precise wheel guidance, stable vehicle behavior at higher speeds, and predictable steering response. Thanks to its factory geometry, this control arm provides a solid foundation for professional suspension repair in the Audi R8.

Specifications and technical data

• SKU: 420407508
• Mark: Audi
• Condition: Used
• OEM Part Number: 420407508
• Substitutable numbers: 420407508, 420 407 508, 420 407 506 E, 420407506E
• Location on the vehicle: Front, Right
• Part type: Control Arm & Ball Joint Assembly
• Category: Control Arms, Ball Joints & Assemblies

Purpose and vehicle placement

The presented control arm operates in the front suspension on the right side of the vehicle, responsible for maintaining proper wheel geometry and stable axle handling. Its front-right placement means the component works directly with the suspension strut, hub, and ball joint, transferring loads from the road surface to the chassis.

Thanks to its carefully selected stiffness and operating characteristics, the control arm helps reduce unwanted wheel movement, which translates into better grip, more effective power transfer, and more predictable vehicle behavior in corners.

Technical and functional characteristics

As an original Audi component, the control arm has been designed for precise fitment to the mounting points on the chassis and steering knuckle. The appropriate arm geometry and integrated sockets for ball joints and bushings allow for maintaining factory suspension angle values after proper installation and wheel alignment.

Key features of this component include:

• stable wheel guidance in the longitudinal and transverse axes,
• controlled transfer of loads from the road surface to the chassis,
• compatibility with the factory damping and stabilization system,
• maintenance of the correct wheel position relative to the wheel arch and body.

Thanks to these properties, the control arm supports safe and predictable handling of the Audi R8, which is particularly important in a high-performance vehicle.

Component condition and service application

The offered control arm is a used part, which allows for economical suspension repair while maintaining the original Audi design. This type of component is often chosen in situations where mechanical damage has occurred (e.g., after hitting a curb or bump) and it is necessary to replace the suspension arm on one side of the vehicle.

In workshop practice, this type of control arm is used both for targeted repairs and for broader service work involving several suspension components on the axle. After installation, it is recommended to perform a geometry measurement and adjustment to fully utilize the design's potential and ensure even tire wear.

Importance for safety and handling

The front right control arm in the Audi R8 has a direct impact on driving stability, steering response, and vehicle behavior during braking and acceleration. A worn or damaged component can cause:

• suspension play and uncertain handling,
• vehicle pulling to one side,
• uneven tire wear,
• reduced ride comfort and steering precision.

Replacing it with a functional, original control arm helps restore suspension stability and improve the perceived quality of handling, which is of particular importance in sports cars such as the Audi R8.

Related suspension components and technical knowledge

When working on the front suspension, it is also worth paying attention to other components from the Control arms and ball joints group, such as additional arms, ball joints, or mounting elements, which together are responsible for the stiffness and precision of the running gear. If you are planning a comprehensive repair or upgrade of the front suspension zone in your Audi and need other elements from the same group, such as additional control arms, ball joints, or mounting hardware, check the available parts in the Audi control arms and ball joints category.

To better understand the relationships between shock absorbers, control arms, and stabilizers and their impact on vehicle behavior, it is worth referring to our guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers. Additionally, if you want to take an informed approach to choosing components from the secondary market, the article Used car parts: Myths and facts you need to know may be helpful, as it organizes the most important information regarding the use of used components in professional repairs.