Audi A4 B7 Wishbone Upper Control Arm Front Right O/S 8E0399263AG

Audi A4 B7 Wishbone Upper Control Arm Front Right O/S is a key component of the front axle steering system, responsible for precisely maintaining suspension geometry and driving stability. The offered part, designed for the right side of the front axle, ensures proper wheel guidance and seamless cooperation with other suspension and drivetrain components. It is a practical solution for Audi users looking for a proven, used component with factory-standard performance characteristics.

Specifications and technical data

• SKU: 8E0407506P
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0407506P
• Substitutable numbers: 8E0407506P, 8E0 407 506 P
• Location on the vehicle: Front, Right
• Category: Transmission & Drivetrain Mounts

Purpose and function in the vehicle

The upper front control arm on the right side of the Audi A4 B7 is responsible for maintaining the correct position of the steering knuckle relative to the body, which translates into stable handling, predictable vehicle behavior in corners, and even tire wear. This element operates in the immediate vicinity of the drivetrain and gearbox mounts, which is why its condition is significant for driving comfort, vibration reduction, and proper interaction with other components in the Gearbox and drivetrain mounts group.

A properly selected control arm helps maintain factory wheel alignment and camber parameters, which is particularly important after accident repairs, suspension component replacement, or drivetrain upgrades.

Benefits of using an original Audi component

Using an original control arm from Audi ensures:

• factory fitment for the front right axle, with no modifications required,
• preservation of the suspension performance characteristics intended by the manufacturer,
• consistent cooperation with other steering and drivetrain components,
• reduced risk of incorrect geometry after installation.

For users who expect predictable vehicle behavior and want to maintain driving parameters close to factory specifications, choosing an original upper control arm is a technically sound solution.

Condition, installation, and service application

The offered control arm is a used part, making it an attractive cost-effective alternative while maintaining the original design. It is suitable for both typical maintenance replacements and repairs following mechanical suspension damage, where it is necessary to restore proper wheel guidance on the front right side of the vehicle.

After installation, it is recommended to perform a wheel alignment to fully utilize the potential of the newly installed control arm and ensure even load distribution across the remaining suspension and drivetrain components.

Integration with the drivetrain and gearbox

Due to its classification in the Gearbox and drivetrain mounts group, this control arm operates in an area where significant forces are transferred from the drivetrain to the body. Its proper operation limits unwanted movement of the powertrain, influences stability during acceleration and braking, and helps maintain driving comfort under various loads.

Replacing a worn control arm with a functional unit is particularly important in vehicles operated on uneven surfaces, where dynamic loads on the suspension and drivetrain are significantly higher.

If you are planning a comprehensive repair or upgrade of the drivetrain and gearbox mounting area in your Audi and need other elements from the same group, such as additional brackets, stabilizing elements, or mounts that work with the suspension, check the available parts in the Audi gearbox and drivetrain mounts category.

Technical support and service knowledge

When working in the drivetrain and suspension area, it is worth paying attention to the condition of the gearbox and how it interacts with the rest of the system. For users who are also considering service or transmission replacement, a guide describing typical faults and the principles of selecting used components will be helpful – detailed information can be found in the article Gearbox: manual, automatic, or DSG – typical faults and a guide to buying a used transmission.