Mercedes W221 Control Arm Rear Lower Suspension Swing Wishbone Part A2213520102

Mercedes W221 Front and Rear Right Left Control Arm is a component from the control arms and ball joints category, designed for the rear axle of the vehicle. It enables stable wheel guidance, correct suspension geometry, and predictable vehicle behavior during braking and cornering. This is a solution for users seeking a proven, technically matched component for the suspension system of the Mercedes S-Class W221 generation.

Specifications and technical data

• SKU: A2213520102
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213520102
• Substitutable numbers: A2213520102, A 221 352 01 02, BG
• Location on the vehicle: Rear
• Category: Control Arms, Ball Joints & Assemblies

Purpose and Function in the Suspension System

The offered control arm is dedicated to the rear suspension of the Mercedes W221 and functions as a key element guiding the wheel relative to the body. It is responsible for:

• maintaining the correct geometry of the rear axle wheels,
• stable vehicle handling at higher speeds,
• controlling load changes during braking and acceleration,
• reducing unwanted play in the suspension system.

Thanks to its proper fit to the Mercedes suspension design, the control arm works with other system components, ensuring consistent, predictable vehicle responses to steering inputs.

Construction and Fitment for Mercedes W221

The Mercedes W221 Front and Rear Right Left Control Arm has been designed according to the vehicle manufacturer's requirements, which translates to correct mounting points and compatibility with standard ball joints and metal-rubber bushings. The control arm's construction is adapted for use in the multi-link rear suspension characteristic of the S-Class.

Precise dimensional matching allows for installation without modifications, and after installation, it is possible to set toe and geometry according to factory values. This is important for maintaining even tire wear and driving stability.

Condition, Verification, and Service Application

The component comes from the secondary market, which allows for cost optimization while maintaining an appropriate level of quality. This type of component is often chosen in professional workshops specializing in the Mercedes brand, especially for comprehensive rear axle suspension repairs when multiple control arms need to be replaced simultaneously.

Replacing a worn control arm with a functional unit restores proper suspension operation, reduces knocking and play, and improves steering precision. This is particularly important in a heavy, comfortable luxury car like the Mercedes W221, where the suspension system directly impacts driving comfort and safety.

Benefits of Using the Correct Rear Control Arm

Using a properly selected rear control arm in the Mercedes W221 brings a number of practical benefits:

• Safer Handling – reduced uncontrolled wheel movements and improved stability during emergency maneuvers.
• Better Suspension Geometry – ability to correctly set toe and camber angles, which affects predictable vehicle behavior.
• Driving Comfort – reduction of vibrations and noises transmitted from the road to the body.
• Operational Economy – lower, even tire wear and reduced risk of additional suspension component damage.

More About Mercedes Control Arms and Suspension

If you want to better understand the role of control arms in the drivetrain and the symptoms of their wear, it's worth referring to a guide. Practical information on suspension diagnostics and operation can be found in the article: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers. This is a helpful source of knowledge when planning a rear axle repair for the Mercedes S-Class.

Other Mercedes Control Arms and Ball Joints

If you are also looking for other elements from the same group, such as additional control arms or ball joints for your Mercedes, check out the available Mercedes Control Arms and Ball Joints. This will allow you to select complete suspension repair kits in one place, ensuring component consistency.