Mercedes X156 Control Arm Transverse Suspension Rear Right O/S A2423500400

Mercedes X156 Control Arm Transverse Suspension Rear Right O/S is a component from the Control arms and ball joints group, designed for operation in the rear right part of the suspension. It ensures stable wheel guidance, precise geometry maintenance, and predictable vehicle behavior during acceleration, braking, and cornering. This solution is dedicated to users expecting a solid, factory-spec construction tailored to the specifics of the Mercedes suspension.

Specifications and technical data

• SKU: A2423500400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2423500400
• Substitutable numbers: A2423500400, A 242 350 04 00
• Location on the vehicle: Rear, Right
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The transverse control arm mounted on the rear right axle is responsible for maintaining the correct position of the wheel relative to the body and controlling suspension angles. As a component operating in the transverse plane, it transfers lateral and longitudinal loads, stabilizing the driving path and limiting unwanted wheel movement. A properly selected control arm minimizes the risk of uneven tire wear, improves handling predictability, and supports the effectiveness of the vehicle's safety systems.

Benefits of using an original Mercedes control arm

Using a control arm dedicated to the X156 platform allows for maintaining the factory suspension performance characteristics. The appropriate arm geometry, mounting points, and compatibility with bushings and ball joints translate into:

• consistent, predictable vehicle reactions to steering input,
• better stability at higher speeds,
• reduction of vibrations and play in the suspension system,
• maintenance of correct wheel geometry after proper alignment.

For the user, this means more confident handling, especially on uneven surfaces and during dynamic maneuvers.

Installation and operational characteristics

The transverse control arm is designed for installation in the rear right part of the vehicle, replacing the factory suspension arm. The design, intended for use with original mounting points, facilitates service and eliminates the need for additional modifications. After installation, it is recommended to perform a geometry check and adjustment to fully utilize the potential of the suspension system and ensure even tire wear.

The component comes from the Control arms and ball joints group, which means it works in conjunction with other components responsible for wheel guidance and load transfer. The correct selection of this control arm is particularly important in vehicles equipped with advanced electronic stability control systems, where suspension precision has a direct impact on the effectiveness of the electronics.

Practical application and driving safety

A functional transverse control arm on the rear axle is crucial for maintaining vehicle stability in daily use. It influences:

• maintaining constant tire contact with the road surface,
• limiting body roll and uncontrolled body movements,
• precise operation of ABS and ESP systems,
• driving comfort when the vehicle is loaded.

For the driver, this means greater control over the car in emergency situations and more stable behavior on wet or uneven roads. Replacing a worn control arm with the correct component dedicated to Mercedes allows for restoring the vehicle's original driving characteristics.

Suspension system expansion and auxiliary materials

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

To better plan service work and understand the relationships between individual suspension components, it is worth using a guide describing the construction and operation of these subassemblies – a detailed discussion can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.