Rear Wishbone Mercedes W221 Right O/S Thrust Control Arm Axle A2213500806

The Mercedes W221 Rear Right Control Arm Ball Joint is a component from the Control Arms and Ball Joints group, designed for the rear right side of the suspension. It is responsible for precise wheel guidance, driving stability, and correct axle geometry, which translates to safe and predictable vehicle behavior. This is a solution for users expecting a robust, proven part with a design tailored to the specifics of the Mercedes S-Class W221 suspension.

Specifications and technical data

• SKU: A2213500806
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213500806
• Substitutable numbers: A2213500806, A 221 350 08 06, A2213520388, A 221 352 03 88, BG
• Location on the vehicle: Rear, Right
• Category: Control Arms, Ball Joints & Assemblies

Purpose and Role in the Suspension System

The control arm with ball joint, mounted on the rear right side of the vehicle, operates in close proximity to the wheel hub and other multi-link suspension components. Its task is to maintain the correct position of the wheel relative to the body, control camber and toe angles, and dampen loads transferred from the road surface to the chassis. A correctly selected and functional control arm reduces unwanted play, improves stability at higher speeds, and minimizes tire wear.

Construction and Technical Characteristics

The presented control arm, integrated with a ball joint, is specifically designed for the suspension geometry of the Mercedes S-Class W221. The shape of the arm, mounting points, and ball joint construction are adapted for operation on the rear axle, on the right side, which facilitates installation and ensures proper cooperation with other components. The use of a ball joint allows for smooth articulation in multiple planes while maintaining steering stiffness.

This element belongs to the Control Arms and Ball Joints group, meaning it is responsible for both load transfer and the movable connection between the body and the steering knuckle. This allows the suspension to operate through its full range of travel without losing control over the wheel's position.

Benefits of Use in the Mercedes W221

Using the appropriate control arm with ball joint on the rear right side allows for:

• maintaining stable vehicle handling when driving straight and through corners,
• reducing vibrations and knocking resulting from excessive suspension play,
• preserving correct wheel geometry, which contributes to even tire wear,
• improving steering response precision and driving comfort.

This is particularly important in a luxury sedan like the Mercedes W221, where a high level of suspension refinement and predictable vehicle behavior in all conditions are expected.

Condition, Fitment, and Practical Application

The offered element is in used condition, allowing for an economical replacement of a worn or damaged control arm while maintaining proper suspension performance parameters. Due to its dedicated placement on the vehicle (rear, right side), installation is straightforward and does not require suspension modifications. After installation, a wheel alignment is recommended to fully utilize the part's potential and ensure even rear axle guidance.

Technical Support and Selection of Appropriate Components

The control arm with ball joint is among the components that directly affect driving safety. Therefore, when replacing it, it is important to pay attention to compatibility with the specific model version and the technical parameters assigned to a given unit. Manufacturer markings, OEM part numbers, and cross-reference numbers assigned to this product are helpful in selection.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Mercedes and need other elements from the same group, such as additional control arms, ball joints, or connecting elements, check the available parts in the Mercedes Control Arms and Ball Joints category.

To better understand the relationships between shock absorbers, control arms, and stabilizers, and their impact on safety, it is worth consulting the guide: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers.

If you want to streamline the process of selecting parts by OEM number or other technical designations, the practical step-by-step guide will be helpful: Guide: How to Select the Right Car Part by VIN and OEM Number.