Audi Q5 FY Rear Wishbone Suspension Control Arm Left N/S 4M0505425D

Audi Q5 FY Rear Wishbone Suspension Control Arm Left N/S is an original component from the Control arms and ball joints group, designed for the rear left side of the suspension. Engineered by the vehicle manufacturer, it ensures proper axle geometry, stable handling, and predictable vehicle behavior during daily operation.

Specifications and technical data

• SKU: 4M0505425D
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0505425D
• Substitutable numbers: 4M0505425D, 4M0 505 425 D, 80A505291, 80A 505 291
• Location on the vehicle: Rear, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The rear left control arm in the Audi Q5 FY is responsible for precise wheel guidance relative to the body, maintaining specified suspension angles, and transferring loads generated during acceleration, braking, and cornering. As a component working with ball joints and other rear axle parts, it influences:

• driving stability at higher speeds,
• even tire wear,
• braking system efficiency in emergency situations,
• ride comfort and shock absorption.

Benefits of using an original control arm

Using an original control arm in an Audi allows you to maintain factory suspension performance parameters without the need to modify other system components. As a result:

• rear axle geometry can be correctly set after installation,
• compatibility with stock ball joints and other components is maintained,
• the risk of unwanted play and knocking in the suspension is reduced.

Located on the rear left side of the vehicle, this component operates under demanding conditions, which is why choosing the right part has a direct impact on safety and handling predictability.

Condition of the part and service application

The presented control arm is an aftermarket part, which allows for cost-effective suspension repair while maintaining a design consistent with the original Audi factory specifications. This type of component is particularly useful in situations where:

• mechanical damage to the control arm has occurred (e.g., after hitting a curb or a pothole),
• there are issues with maintaining wheel alignment or camber,
• diagnostics have revealed excessive play in the control arm mounts.

After installation, it is recommended to perform a suspension geometry adjustment to fully utilize the potential of the newly installed part and restore proper vehicle handling.

Technical support and suspension knowledge development

When planning suspension work, it is worth looking at the system as a whole – it includes not only control arms but also shock absorbers and stabilizers. To better understand the relationships between these components and the symptoms of their wear, the following article will be helpful: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.

Expanding suspension work on your Audi

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 mounting hardware, check out the available parts in the Audi control arms and ball joints category.

Summary

Audi Q5 FY Rear Wishbone Suspension Control Arm Left N/S is a structurally matched rear axle component that allows for the restoration of proper suspension operation after damage or wear. Choosing an original solution from the Control arms and ball joints group facilitates installation, enables correct geometry adjustment, and supports safe, predictable vehicle handling in daily use.