Mercedes R231 Control Arm Suspension Rear Left Right N/O/S A2313507300

Mercedes R231 Control Arm Suspension Rear Left Right is an original component from the Control arms and ball joints group, designed for operation in the vehicle's rear axle. The design, adapted for installation on either the left or right side at the rear, ensures proper suspension geometry, stable handling, and predictable vehicle behavior. This is a solution for users who expect precise handling and wish to maintain the factory suspension characteristics of their Mercedes.

Specifications and technical data

• SKU: A2313507300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2313507300
• Substitutable numbers: A2313507300, A 231 350 73 00
• Location on the vehicle: Rear, Right, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension system

The presented control arm operates in the rear part of the vehicle, on the left or right side, and is responsible for maintaining the correct position of the wheel relative to the body. As a guiding element in a multi-link suspension, it stabilizes the driving path, limits unwanted wheel movement, and supports even load distribution to the body.

Thanks to its precisely selected geometry and cooperation with ball joints, the control arm helps maintain:

• vehicle stability during acceleration and braking,
• correct wheel camber and toe angles,
• ride comfort on uneven road surfaces.

Benefits of using an original Mercedes control arm

Using an original control arm in Mercedes R231 family models allows for the preservation of factory suspension performance parameters. The component has been designed for the specific construction of the rear axle, which translates into:

• precise fitment to the mounting points on the body and steering knuckle,
• consistent cooperation with other suspension components,
• appropriate stiffness and deflection characteristics under load.

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

Installation and operational characteristics

The control arm is intended for installation on the rear axle, with the possibility of use on either the right or left side, which facilitates part selection during post-collision repairs or routine maintenance. The design, intended for use with ball joints, ensures a rigid yet appropriately flexible connection with other suspension elements.

When replacing, it is recommended to:

• check the condition of other control arms and ball joints in the rear axle,
• inspect bushings and mounting points for any play,
• perform a wheel alignment after installation is complete.

Practical application and driving safety

A functional rear axle control arm has a direct impact on driving safety, especially at higher speeds and during sudden maneuvers. Maintaining proper suspension geometry limits the "wandering" of the vehicle's rear, improves stability on curves, and increases the effectiveness of driver assistance systems.

For drivers who value the confident handling of a Mercedes, replacing a worn component with an original part from the Control arms and ball joints group is an essential step toward maintaining the car's factory character and ensuring even tire wear.

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 guiding components, check the available parts in the Mercedes control arms and ball joints category.

Technical support and suspension knowledge

To better plan rear axle service and consciously assess the condition of other components, it is worth consulting verified technical materials. Practical tips regarding diagnostics, symptoms of wear, and principles of selecting suspension elements can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses, among other things, the specifics of control arm operation in premium class vehicles.