Audi A4 B9 A5 F5 Wishbone Suspension Control Arm Front Right O/S 8W0407156A

Audi A4 B9 A5 F5 Wishbone Suspension Control Arm Front Right O/S is an original component from the Control arms and ball joints group, designed for operation in the front right corner of the suspension. Engineered by the vehicle manufacturer, it ensures proper steering geometry, stable handling, and predictable vehicle behavior during braking and cornering.

Specifications and technical data

• SKU: 8W0407156A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0407156A
• Substitutable numbers: 8W0407156A, 8W0 407 156 A
• Location on the vehicle: Front, Right
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension system

The presented control arm is dedicated to the front axle on the right side, where it is responsible for the precise guidance of the wheel relative to the body. As a structural element working in conjunction with the ball joint and other suspension components, it maintains the specified camber and toe angles, which translates into confident handling and even tire wear. Thanks to its factory geometry and appropriately selected stiffness, the control arm helps reduce unwanted vibrations, improves stability at higher speeds, and supports the operation of shock absorbers and suspension springs.

Benefits of using an original Audi control arm

Using an original control arm in Audi A4 B9 and A5 F5 models allows you to maintain the driving parameters intended by the manufacturer. Proper fitment to the steering knuckle, subframe mounts, and other suspension elements minimizes the risk of play, unwanted noises, and accelerated tire wear. Key advantages include:

• Precise fit to the front right suspension structure.
• Consistency with factory handling characteristics and ride comfort.
• Reduced need for installation modifications due to the retention of original geometry.
• Ability to correctly set wheel alignment after replacing the component.

Characteristics and practical application

The control arm operating in the front right part of the suspension is particularly stressed during braking, cornering, and driving over uneven surfaces. The correct selection of this component has a direct impact on:

• driving stability during sudden maneuvers,
• steering system response to steering wheel inputs,
• comfort of damping irregularities and the level of vibrations transmitted to the body. In the event of wear or damage to the control arm, typical symptoms include knocking in the front suspension, unstable handling, vehicle pulling to one side, or uneven tire wear. Replacing it with the correct component restores proper system operation and increases operational safety.

Component condition and installation recommendations

The offered control arm is a used part, which allows for an economical repair while maintaining the original design. Before installation, it is recommended to verify the condition of cooperating suspension components and subsequently perform a wheel alignment to fully utilize the potential of the part and ensure even load distribution across all mounting points. The replacement of the control arm should be carried out using appropriate tools and tightening torques, in accordance with the service procedures provided for Audi A4 B9 and A5 F5 models. This helps avoid stress in the bushings and ensures long-term, stable suspension operation. If you are planning a comprehensive repair or upgrade of the front 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.

Technical support and knowledge about the suspension system

To better understand the role of control arms in the context of the entire chassis system and proper diagnostics, it is worth using educational materials. Practical tips regarding the operation and inspection of components such as shock absorbers, control arms, or stabilizers can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which helps in consciously planning service work and selecting the right components.