Audi A4 B9 A5 F5 Rear Suspension Control Arm Wishone Rod Right O/S 8W0505398F

Audi A4 B9 A5 F5 Rear Suspension Control Arm Wishone Rod Right O/S is a component from the Control arms and ball joints category, designed for the rear, right side of the suspension. Designed as an original Audi part, it ensures proper axle geometry, stable handling, and predictable vehicle behavior during daily operation.

Specifications and technical data

• SKU: 8W0505398F
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0505398F
• Substitutable numbers: 8W0505398F, 8W0 505 398 F, 8W0505398E, 8W0 505 398 E, 8W0505371F, 8W0 505 371 F
• Location on the vehicle: Rear, Right
• Part type: Control Arm & Ball Joint Assembly
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The presented control arm operates in the rear suspension on the right side, responsible for maintaining the correct position of the wheel relative to the body. Its design allows for precise transfer of longitudinal and lateral loads, which translates into driving stability, confident cornering, and proper cooperation with other suspension system components.

Thanks to the factory design tailored to specific Audi models, the control arm maintains the correct mounting points and geometry, which facilitates wheel alignment and minimizes the risk of uneven tire wear. This is particularly important during post-collision repairs, replacing components after operational wear, or when eliminating play and knocking in the rear axle.

Benefits of using an original Audi control arm

Using an original Audi solution in the rear axle area ensures:

• consistency with the factory vehicle handling characteristics,
• proper cooperation with other control arms and ball joints,
• appropriate force transfer during braking and acceleration,
• maintenance of the correct wheel position throughout the entire suspension travel range.

The control arm in this suspension location is crucial for ride comfort, stability at higher speeds, and the effectiveness of assistance systems, such as traction control or electronic stability control. Choosing a component designed specifically for Audi reduces the risk of installation issues and simplifies service.

Installation and operational characteristics

The placement on the vehicle in the rear, right part of the axle means this control arm works under demanding conditions – it is exposed to variable loads, road irregularities, and forces acting during cornering. A properly selected component helps limit unwanted wheel movement, reduces noise and vibration, and supports even tire wear.

When replacing, it is recommended to check other components from the control arm and ball joint group in the rear axle to ensure uniform operation of the entire system. Proper installation, adhering to tightening torques and subsequent geometry checks, allows for fully utilizing the potential of this component and restoring the vehicle's predictable behavior.

Condition and service application

The offered control arm is a used part, making it an attractive service solution in situations where an optimal cost-to-functionality ratio is important. It can be used both for standard replacement of worn components and for post-accident repairs when it is necessary to restore the correct rear axle geometry without interfering with the body structure.

The selection of the correct control arm for a specific Audi version should always be confirmed based on vehicle data and information contained in the technical specification, which minimizes the risk of incompatibility and speeds up the repair process.

Suspension system expansion and educational materials

If you are planning a comprehensive repair or upgrade of the suspension zone 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.

To better understand the relationships between individual suspension components and the symptoms of their wear, it is worth referring to the technical guide describing shock absorbers, control arms, and stabilizers – you can find it in the article "Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers", which helps in consciously planning service work and diagnosing irregularities in the operation of the chassis system.