Control Arm Audi A4 B8 A5 8F Q5 8R Lower Wishbone Front Left N/S 8K0407151D

Control Arm Audi A4 B8 A5 8F Q5 8R Lower Wishbone Front Left N/S is a component from the Control arms and ball joints category, designed for the front suspension on the driver's side. This used original Audi part ensures proper wheel alignment, stable vehicle handling, and predictable behavior during braking and cornering.

Specifications and technical data

• SKU: 8K0407151D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0407151D
• Substitutable numbers: 8K0407151D, 8K0 407 151 D
• Location on the vehicle: Front, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The lower front control arm on the left side is responsible for precise wheel guidance relative to the body and maintaining specified suspension angles. In combination with other system components, such as ball joints and metal-rubber bushings, it influences:

• driving stability at higher speeds,
• even tire wear,
• braking efficiency without pulling to one side,
• ride comfort and bump absorption.

A properly selected control arm is particularly important in Audi A4, A5, and Q5 class vehicles, where the suspension system is designed with an emphasis on steering precision and predictable response to steering inputs.

Benefits of using an original control arm

Using an original control arm from this series allows you to maintain factory suspension performance parameters. As a result, the driver receives:

• consistent vehicle behavior in line with the manufacturer's specifications,
• proper compatibility with other steering and suspension components,
• appropriate stiffness and operating characteristics of the ball joints,
• better vehicle control in emergency situations.

This solution is especially recommended for post-collision repairs, replacing worn suspension components, or restoring factory handling characteristics after modifications.

Vehicle placement and installation aspects

The presented control arm is designed for installation on the front axle on the left side. Such placement requires following the correct service procedure, including checking the condition of other suspension components in this area. After replacement, it is recommended to perform a wheel alignment to fully utilize the potential of the newly installed part.

A used original part is a good choice in situations where the priority is to maintain the factory suspension design while optimizing repair costs.

Safety and suspension system diagnostics

A functional control arm has a direct impact on driving safety. Symptoms such as knocking in the front suspension, unstable handling, vehicle pulling, or uneven tire wear may indicate the need to verify this component. Regular inspection of the condition of ball joints and bushings within the control arm allows for early detection of play and prevents further damage to the steering and suspension system.

If you want to better understand how the suspension works and the relationships between individual components, the following guide will be helpful: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses practical aspects of operation and diagnostics.

Expanding Audi suspension repairs

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