Audi R8 42 Control Arm Mount Bracket Lower Rear Left N/S 420407457H

Audi R8 42 Control Arm Mount Bracket Lower Rear Left N/S is an original component from the Control arms and ball joints group, designed for the rear left axle of the Audi sports model. The precise geometry of this bracket ensures stable handling, predictable body behavior, and proper cooperation with other suspension components.

Specifications and technical data

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

Purpose and function in the suspension

The lower control arm mount bracket on the rear left axle is responsible for maintaining correct wheel geometry and transferring loads between the body and the wheel assembly. In a dynamic car like the Audi R8, this is crucial for:

• stability at high speeds,
• cornering precision,
• even tire wear,
• effective transfer of braking and acceleration forces.

A properly selected control arm bracket allows for maintaining factory suspension settings and reduces the risk of unwanted play or vibrations in the rear of the vehicle.

Compatibility and design parameters

The presented element has been designed specifically for use on the rear left side of the vehicle, taking into account the characteristics of the drive axle and weight distribution in the Audi R8. The bracket design works with wheels of a specific width, which facilitates maintaining the correct wheel position relative to the body and correct alignment of toe and camber.

This makes it possible to maintain the consistency of the entire suspension system, as well as seamless integration with other elements from the Control arms and ball joints category, such as transverse arms, trailing arms, or ball joints.

Benefits of using an original bracket

Using an original lower control arm mount bracket in an Audi R8 translates into a number of practical operational benefits:

• Factory fit – maintaining the original suspension geometry without the need for modifications.
• Consistent cooperation with other rear axle elements – shock absorbers, springs, and other control arms.
• Reduction of the risk of accelerated wear of tires and rubber-metal elements.
• Better vehicle control during braking and acceleration, especially in sports driving conditions.

This solution is recommended both for post-accident repairs and for replacing worn suspension elements in order to restore the car's original driving characteristics.

Condition of the element and service application

The offered lower control arm mount bracket is a used item, which makes it an attractive cost-effective alternative while maintaining the original design specification. It works especially well in situations where it is necessary to replace a single suspension component, and the priority is to maintain compliance with the factory Audi design.

Due to the importance of this sub-assembly for the safety and handling of the vehicle, installation in a specialized service center is recommended, followed by a check and adjustment of the rear axle geometry.

More about suspension and related elements

If you want to better understand the role of control arms, brackets, and stabilizers in modern cars and learn practical tips regarding diagnostics and operation, check out the guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.

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