Mercedes W211 Wishbone Control Arm Rear Axle Right A2303500429

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W211 Wishbone Control Arm Rear Axle Right is a component from the Control arms and ball joints category, designed for the rear right suspension of Mercedes vehicles. It enables precise wheel guidance, stabilizes suspension geometry, and supports safe vehicle handling during acceleration, braking, and cornering.

Specifications and technical data

• SKU: A2303500429
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2303500429
• Substitutable numbers: A2303500429, A 230 350 04 29
• Location on the vehicle: Rear, Right
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension system

The presented control arm operates in the rear part of the suspension on the right side, responsible for maintaining the correct position of the wheel relative to the body. Thanks to its rigid yet appropriately flexible construction, this component transfers loads from the road to the chassis, limits unwanted wheel movement, and helps maintain a stable driving path.

The control arm works in conjunction with ball joints and other suspension components, ensuring:

• control of wheel alignment and camber under dynamic driving conditions,
• reduction of vibrations transmitted to the body,
• more predictable vehicle behavior during maneuvers.

Benefits of using an original Mercedes control arm

Using a control arm dedicated to the Mercedes W211 allows for maintaining factory handling parameters and comfort. The original geometry and mounting points are matched to the suspension design, which facilitates installation and minimizes the risk of wheel alignment issues after replacement.

Key advantages include:

• precise fit for the rear right suspension without the need for modifications,
• consistent cooperation with other system components,
• maintenance of the handling characteristics intended by the vehicle manufacturer.

Product characteristics and service application

The control arm is a structural element operating under demanding conditions – it transfers vertical, lateral, and longitudinal loads while working with ball joints and metal-rubber bushings. In practice, this means its condition has a direct impact on:

• even tire wear,
• vehicle stability at higher speeds,
• the car's response to steering inputs.

A component from this group is often replaced when symptoms such as knocking from the rear suspension, the car "wandering" on uneven surfaces, or problems with correct geometry alignment occur. Replacing a worn control arm with a functional component restores proper suspension system operation and increases operational safety.

Condition and installation aspects

The product is offered as a used part, which provides a cost-effective solution while maintaining the functionality required for daily use. Before installation, it is recommended to perform a standard verification of the condition of mating components (ball joints, bushings, mounts) and subsequently perform a wheel alignment to fully utilize the potential of the newly installed control arm.

The placement in the rear right part of the vehicle makes it easy for a mechanic to identify the correct mounting point and select appropriate service procedures. This makes the replacement process predictable, and vehicle downtime can be kept to a necessary minimum.

If you are planning a comprehensive repair or upgrade of the 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 role of these types of components in the operation of the entire suspension and to learn practical service tips, it is worth checking out the guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.