Audi R8 Rear Upper Control Arm Right O/S 4.2 TSI 420505362

Audi R8 Rear Upper Control Arm Right O/S is a precision component from the Control arms and ball joints category, responsible for stable wheel guidance and proper suspension geometry. Designed for Audi R8 models with the 4.2 TSI engine, it ensures reliable rear axle handling and predictable vehicle behavior during acceleration, braking, and cornering. This used OEM component is a sensible choice for professional suspension repair when structural fitment and maintaining factory driving parameters are essential.

Specifications and technical data

• SKU: 420505362
• Mark: Audi
• Condition: Used
• OEM Part Number: 420505362
• Substitutable numbers: 420505362, 420 505 362
• Location on the vehicle: Rear, Right
• Part type: Control Arm & Ball Joint Assembly
• Category: Control Arms, Ball Joints & Assemblies

Purpose and vehicle placement

The presented control arm is designed for installation on the rear axle of the vehicle, on the right side. As an upper suspension arm, it works in conjunction with other system components to maintain the correct position of the hub and wheel relative to the body. Proper placement on the vehicle is crucial for:

• maintaining correct wheel alignment and camber,
• stability at high speeds,
• even tire wear,
• precise steering response.

Thanks to its dedicated application in the Audi R8 4.2 TSI, the control arm integrates perfectly with the characteristics of the sports suspension, preserving factory geometry settings.

Technical and functional characteristics

The control arm belongs to the Control arms and ball joints group, meaning it is responsible not only for load-bearing but also for smooth suspension movement within the range of the shock absorber and spring. The design intended for the rear axle of the Audi R8 ensures:

• a rigid connection to the body while allowing controlled wheel movement,
• cooperation with ball joints and metal-rubber bushings,
• resistance to dynamic loads typical of a sports car.

Selecting the correct upper control arm on the right side is important during any suspension intervention – whether after a collision or when replacing worn parts – to avoid geometry alignment issues and unwanted vibrations.

Benefits of using an original used component

A used control arm dedicated to the Audi R8 allows you to maintain the vehicle's factory handling characteristics without the need for aftermarket replacements with uncertain parameters. The main advantages of this solution include:

• preservation of the original design and mounting points,
• compatibility with other rear axle suspension components,
• the possibility of an economical repair while maintaining high quality.

By choosing this element, you gain consistency with the factory suspension design, which translates into predictable vehicle behavior on the road and easier geometry adjustment after installation.

Selection and integration with the suspension system

When replacing the rear upper control arm on the right side, it is worth paying attention to the overall condition of other suspension components. In many cases, it is recommended to simultaneously check other arms, ball joints, and mounting elements to avoid uneven system operation. A correctly selected and installed control arm:

• facilitates geometry alignment after service,
• reduces play and knocking in the rear of the vehicle,
• supports stability during dynamic driving.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Audi and need other elements from the same group, such as additional arms, ball joints, or mounting brackets, check the available parts in the Audi control arms and ball joints category.

Expert support and suspension knowledge

For a full understanding of suspension operation and the impact of control arms on safety and driving comfort, it is worth consulting expert materials. Practical tips regarding diagnostics, symptoms of wear, and proper maintenance principles can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which helps in better planning service and selecting the right components for a specific model.