Mercedes W221 M157 Petrol Rear Wheel Carrier Camber Arm Right O/S A2213501406

Mercedes W221 M157 Petrol Rear Wheel Carrier Camber Arm Right O/S is an original component from the Control arms and ball joints group, designed for the rear right suspension section in vehicles with a petrol engine. The precise geometry of this control arm supports body stability, improves handling, and helps maintain proper wheel alignment in demanding road conditions.

Specifications and technical data

• SKU: A2213501406
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213501406
• Substitutable numbers: A2213501406, A 221 350 14 06
• Location on the vehicle: Rear, Right
• Fuel type: Petrol
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The rear right control arm in the Mercedes W221 model with the M157 unit is responsible for stable wheel guidance in the longitudinal and transverse axes, as well as for transferring loads from the road surface to the chassis. As a component working with ball joints and other suspension parts, it influences:

• maintaining proper wheel geometry during acceleration and braking,
• limiting unwanted wheel displacement in corners,
• driving comfort at higher speeds,
• even tire wear.

Thanks to a design tailored to the rear axle on the right side, the control arm contributes to a cohesive wheel guidance system, which is particularly important in cars with higher power and weight.

Compatibility with the petrol powertrain

The presented control arm has been designed for vehicles with a petrol engine, which means it is matched to the load characteristics typical of this powertrain version. In practice, this translates into:

• appropriate stiffness and durability during dynamic driving,
• stable rear axle behavior during sudden load changes,
• better vehicle control at high highway speeds.

Selecting the correct control arm for a specific fuel type is important for the durability of the entire suspension system and the predictable behavior of the car.

Performance and installation characteristics

The offered element comes from the Control arms and ball joints segment, which guarantees structural consistency with other components in this group. The used condition of the part allows for an economical replacement while maintaining the original installation specification, without the need for adaptations or structural modifications.

In practice, this means that with proper verification of compatibility with the specific body version and suspension system, the control arm can be installed as a direct replacement for the factory component, restoring proper rear axle handling.

Importance for safety and handling

A functional rear right control arm has a direct impact on driving safety. Wear or damage to this component can result in:

• deterioration of vehicle stability in corners,
• excessive play in the suspension,
• vibrations transmitted to the chassis,
• accelerated wear of tires and other suspension elements.

Replacing it with an original control arm dedicated to the Mercedes W221 M157 allows for restoring predictable car reactions to steering inputs, which is especially important in vehicles with higher power and curb weight.

Suspension system expansion and additional information

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

To better understand the role of control arms in the operation of the entire suspension and the symptoms of their wear, it is worth checking the practical tips included in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, where, among other things, the operation of control arms in premium class cars is discussed.