Audi A6 C8 Q7 4M Rear Wishbone Lower Control Arm Left N/S 4M0505371R

Left Rear Lower Control Arm for Audi A6 C8 / Q7 4M is an original part from the Control Arms and Ball Joints group, designed for the rear axle on the left side. Designed by the vehicle manufacturer, it ensures proper suspension geometry, stable vehicle handling, and predictable behavior during braking and cornering.

Specifications and technical data

• SKU: 4M0505371R-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0505371R
• Substitutable numbers: 4M0505371R, 4M0 505 371 R
• Location on the vehicle: Rear, Left
• Part type: Control Arm & Ball Joint Assembly
• Category: Control Arms, Ball Joints & Assemblies

Purpose and Function in Suspension

The presented control arm is a structural component of the rear suspension, responsible for maintaining the correct position of the wheel relative to the body on the left side. Thanks to its precisely selected geometry, it works with other system components, limiting undesirable wheel movements and supporting even tire wear.

A properly selected lower control arm influences:

• driving stability at higher speeds,
• confident cornering,
• proper operation of ball joints and rubber-metal bushings,
• maintaining factory wheel alignment angles.

Benefits of Using an Original Audi Control Arm

Using an original control arm from this series allows you to maintain the factory suspension performance parameters in Audi A6 C8 and Audi Q7 4M. The component has been specifically designed for the rear axle, left side, which translates to proper fitment with other components and predictable vehicle behavior in various road conditions.

The most important advantages include:

• Factory fit for the Audi platform – no need for modifications or adjustments.
• Consistent cooperation with other control arms and ball joints in the multi-link system.
• Reduced risk of incorrect toe and camber settings.

Condition of the Part and Practical Application

The control arm is a used part, allowing for economical suspension repair while maintaining the original manufacturer's design. This solution is particularly beneficial for comprehensive replacement of several rear suspension components, where both quality and cost control are important.

The part is suitable for situations such as:

• replacement after mechanical damage (e.g., hitting a curb or obstacle),
• repair after a collision in the rear axle area,
• eliminating play and knocking resulting from wear of wheel guiding elements.

Technical Support and Suspension Knowledge

To better understand the role of control arms in the drivetrain and the symptoms of their wear, it is worth consulting a guide. Practical information on the diagnosis and operation of suspension components can be found in the article Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which discusses, among other things, how to care for different types of control arms in popular models.

Other Audi Control Arms and Ball Joints

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

For drivers who want to combine suspension service with a more conscious approach to vehicle operation, an interesting addition may be the article Eco-Driving: Discover the Benefits of Used Car Parts, which describes the advantages of choosing proven, used components in terms of economy and the environment.