Mercedes R231 Control Arm Lower Rear Left Right N/O/S A2313520002

Mercedes R231 Control Arm Lower Rear Left Right is a precision suspension component designed specifically for the R231 series models. It is responsible for stable wheel guidance, correct axle geometry, and predictable vehicle behavior during acceleration, braking, and cornering. Thanks to the use of the original Mercedes design, this component from the Control arms and ball joints group allows for maintaining factory suspension performance parameters.

Specifications and technical data

• SKU: A2313520002
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2313520002
• Substitutable numbers: A2313520002, A 231 352 00 02
• Location on the vehicle: Rear, Right, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The presented lower rear control arm is designed for installation on the rear axle, on both the left and right sides. Such a design allows for flexible application depending on the vehicle's service needs. This component transfers loads between the body and the wheel hub, maintaining a stable wheel position relative to the body and supporting correct toe and camber alignment.

In the multi-link suspension of the Mercedes R231, the lower rear control arm works with other suspension arms and ball joints, creating a cohesive system responsible for:

• precise guidance of the rear axle wheels at various speeds,
• reduction of unwanted wheel displacement when driving over bumps,
• maintaining vehicle stability during dynamic maneuvers.

Benefits of using an original Mercedes control arm

Using an original control arm in a Mercedes R231 allows for maintaining factory handling characteristics and ride comfort. The arm design, mounting geometry, and cooperation with ball joints are matched to the specific requirements of this model, which translates into:

• consistent suspension behavior with other rear axle components,
• appropriate stiffness while maintaining the required operational flexibility,
• proper cooperation with vehicle safety systems, such as traction control or electronic stability control.

For the user, this means predictable vehicle reactions, better control over the vehicle, and a reduction in the risk of accelerated tire wear resulting from incorrect geometry.

Installation and operational characteristics

The lower rear control arm for the Mercedes R231 has been designed as a component intended for installation at factory mounting points, which facilitates service work and shortens replacement time. The arm design is adapted for operation on both the left and right sides, which simplifies part selection for repairs involving both sides of the axle.

The control arm works with ball joints and other suspension group components, creating a stable connection between the body and the wheel assembly. The proper condition of this element has a direct impact on:

• maintaining specified wheel alignment angles,
• reducing play in the suspension,
• reducing vibrations transmitted to the body.

Component condition and service application

The offered control arm is a used part, which makes it an attractive solution for users looking for a technically matched part within a favorable service budget. In the case of suspension repairs in a Mercedes R231, using an original arm from the same design group allows for maintaining system consistency and reducing the risk of geometry problems after installation.

Replacing a worn control arm with a functional component of this type is particularly recommended when symptoms such as unstable handling, knocking from the rear axle, or uneven tire wear appear. Selecting the right component from the Control arms and ball joints group is crucial for restoring proper suspension operation.

Suspension service expansion and educational materials

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 arms, ball joints, or mounting brackets, 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 the impact of these components on driving safety, it is worth reading the guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers. This will make it easier for you to plan the scope of service work and select the appropriate components for your car.