Audi A4 B9 A5 F5 Control Arm Wishbone Rear Left Right N/S 8W0505361E

Audi A4 B9 A5 F5 Control Arm Wishbone Rear Left Right is an original component from the Control Arms and Ball Joints group, designed for operation in the vehicle's rear axle. The design, adapted for installation on either the left or right side of the rear suspension, ensures consistent wheel guidance and stable vehicle behavior during cornering and braking. This is a solution for users who expect precise geometry and predictable suspension performance in Audi A4 B9 and A5 F5 models.

Specifications and technical data

• SKU: 8W0505361E-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0505361E
• Substitutable numbers: 8W0505361E, 8W0 505 361 E
• Location on the vehicle: Rear, Right, Left
• Part type: Control Arm & Ball Joint Assembly
• Category: Control Arms, Ball Joints & Assemblies

Purpose and vehicle placement

The presented control arm operates in the rear part of the suspension, where it is responsible for maintaining the correct position of the wheel relative to the body. The ability to use it on either the left or right side of the rear axle facilitates component selection for repairs involving both sides of the vehicle. This allows for maintaining consistent suspension performance characteristics and reducing differences in component wear on both sides of the car.

Technical characteristics and function in the suspension system

The rear control arm in this Audi model transfers loads between the wheel hub and the body, working in conjunction with other elements from the Control Arms and Ball Joints group. It is responsible for:

• maintaining stable wheel geometry under changing loads,
• controlling camber and toe-in within the range specified by the manufacturer,
• damping some of the vibrations transmitted from the road surface to the body,
• working with shock absorbers and springs to improve traction. A properly selected and functional control arm reduces unwanted play in the suspension, which translates into more confident handling, even tire wear, and predictable vehicle behavior during dynamic driving.

Benefits of using an original Audi control arm

Using an original rear control arm in the Audi A4 B9 and A5 F5 allows for maintaining factory suspension performance parameters. Key advantages include:

• Precise mounting fit – mounting points and geometry consistent with the vehicle manufacturer's design.
• Consistent cooperation with other suspension elements, including ball joints and other control arms.
• Reduced risk of incorrect geometry alignment after component replacement.
• Ability to use existing adjustment points in the suspension system without additional modifications. For users who expect predictable handling and driving comfort, choosing an original component is a technically safe solution that complies with Audi's design assumptions.

Component condition and service application

The offered control arm is a dismantled part intended for service applications in Audi A4 B9 and A5 F5 vehicles where replacement of a rear suspension component is necessary due to a collision, operational wear, or as part of preventive maintenance of the chassis system. Replacing the control arm is particularly recommended when symptoms such as unstable handling, knocking sounds from the rear of the vehicle, or problems with wheel geometry alignment occur.

Technical support and additional materials

To better plan suspension service work, it is worth using educational materials describing the principles of operation and diagnostics of this system. Practical tips regarding shock absorbers, control arms, and stabilizers can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses, among other things, typical signs of wear and best practices for replacing suspension components. If you are planning a comprehensive repair or upgrade of the rear suspension area in your Audi and need other elements from the same group, such as additional control arms, ball joints, or mounting hardware, check the available parts in the Audi Control Arms and Ball Joints category.