Control Arm Mercedes X156 Transverse Suspension Rear Left N/S A2423500300

Control Arm Mercedes X156 Transverse Suspension Rear Left N/S is a component from the Control arms and ball joints group, designed for operation on the rear axle on the left side. It ensures precise wheel guidance, body stability, and predictable vehicle behavior during acceleration, braking, and cornering. This is a solution for users who expect a solid, proven part with a design compliant with the manufacturer's standards.

Specifications and technical data

• SKU: A2423500300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2423500300
• Substitutable numbers: A2423500300, A 242 350 03 00
• Location on the vehicle: Rear, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension system

The transverse control arm mounted on the rear axle on the left side is responsible for maintaining proper wheel geometry and controlling suspension movement in the transverse plane. A correctly selected and installed component limits unwanted wheel displacement, which translates into:

• stable vehicle handling at higher speeds,
• even tire wear,
• better traction during acceleration and braking,
• more predictable vehicle reactions to steering inputs.

Thanks to being matched to the specific axle and side of the vehicle, the control arm works with other suspension components, creating a cohesive, safe running gear.

Construction and vehicle fitment

The transverse control arm in this model has been designed for operation in the rear part of the body, on the driver's side. The construction is adapted to the suspension characteristics used in the X156 series, which allows for proper transfer of vertical and lateral loads. The appropriate placement of mounting points enables correct setting of toe and camber angles after adjustment at a geometry station.

The component is prepared for compatibility with factory mounting points, which facilitates service and reduces the time required for replacement. Precise fitment to the suspension design minimizes the risk of play and unwanted noises while driving.

Benefits of using the original transverse control arm

Using a transverse control arm dedicated to a specific vehicle platform allows for maintaining factory driving characteristics. In practice, this means:

• maintaining the bump damping comfort intended by the manufacturer,
• preserving driving stability under full load,
• proper cooperation with shock absorbers, springs, and ball joints,
• reducing the risk of premature wear of tires and other suspension components.

The dedicated rear left transverse control arm is particularly important in vehicles where handling precision and repeatability of car behavior in various road conditions are essential.

Component condition and service application

The offered control arm comes from the used parts group, which allows for an economical repair of the suspension system while maintaining a design consistent with factory solutions. This type of component is often chosen in situations where replacement is necessary due to mechanical damage, corrosion, or excessive wear of mating parts.

Replacement of the rear left transverse control arm is recommended, among other things, when knocking sounds appear from the rear axle area, problems with maintaining geometry occur, or uneven tire wear is observed. After installing the component, it is worth performing a suspension geometry adjustment to fully utilize its capabilities.

Technical support and additional materials

To better understand the role of control arms in the running gear and the symptoms of their wear, it is worth using educational materials. Practical information regarding diagnostics and operation of suspension components can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses, among other things, issues related to control arms in vehicles of various brands.

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