Audi R8 42 Control Arm Mount Bracket Lower Front Left Right N/O/S 420407457M

Audi R8 42 Control Arm Mount Bracket Lower Front Left Right is an original component from the Control arms and ball joints group, designed for the front suspension of the Audi sports model. The robust construction of the bracket ensures stable support for the lower control arm, which translates into precise vehicle handling and predictable chassis behavior during dynamic driving.

Specifications and technical data

• SKU: 420407457M
• Mark: Audi
• Condition: Used
• OEM Part Number: 420407457M
• Substitutable numbers: 420407457M, 420 407 457 M
• Location on the vehicle: Front, Left, Right
• Gearbox type: No information
• Part type: Control Arm Kit
• Rim width: 8
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the Audi R8 suspension

The presented bracket operates in the front part of the vehicle, serving both the left and right sides. Its task is to provide rigid and repeatable positioning of the lower control arm relative to the body, which is crucial for:

• maintaining correct wheel geometry under lateral and longitudinal loads,
• driving stability during braking and acceleration,
• even wear of tires and suspension components,
• precise transmission of forces from the road to the body.

Thanks to its fitment for the specific design of the Audi R8, the bracket works in harmony with the factory suspension architecture, maintaining the handling characteristics intended by the manufacturer.

Compatibility and performance parameters

The bracket is designed for installation on the front axle of the vehicle, with the possibility of use on either the left or right side, which facilitates part selection during suspension service. The design is adapted to work with wheels of a specific width, which helps maintain the proper position of the control arm mounting points relative to the hub and body.

The element belongs to the Control arms and ball joints group, making it a natural choice for comprehensive suspension maintenance – especially in situations where control arms, pins, or other cooperating elements are also being replaced.

Characteristics of the used component

The offered bracket is a used part, sourced from disassembly, which allows for maintaining the original design specifications while optimizing repair costs. This type of component is particularly useful in:

• post-accident repairs of the front part of the vehicle,
• restoring factory suspension geometry after mechanical damage,
• servicing track-used cars, where suspension components are exposed to increased loads.

Using an original bracket allows for maintaining material and dimensional consistency with other suspension components, which is important for durability and repeatability of geometry settings.

Benefits of using the original lower control arm bracket

Choosing this element primarily means preserving the factory handling characteristics of the Audi. Properly selected lower control arm mounting points influence:

• accurate maintenance of wheel camber and toe angles,
• body stability at high speeds,
• confident vehicle behavior in corners and during sudden maneuvers.

Additionally, using an element from the same design group as other suspension components reduces the risk of unwanted stresses and accelerated wear of adjacent parts.

Suspension service expansion and educational materials

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 additional brackets, control arms, or ball joints, check out the available parts in the Audi control arms and ball joints category.

For a better understanding of suspension operation and the relationship between shock absorbers, control arms, and stabilizers, it is worth checking out our guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers. It will help you plan the scope of service work and select the right components for your car.