Mercedes W220 S350 Rear Axle Carrier Wheel Hub Arm Joint Right O/S A2203509008

Mercedes W220 S350 Rear Axle Carrier Wheel Hub Arm Joint Right O/S is an original structural component designed for the rear axle on the passenger side. The part comes from a vehicle disassembly, which allows for maintaining the factory suspension geometry and proper wheel tracking in the luxury S-Class sedan. By preserving the kinematics specific to this model, the component ensures stable handling and predictable vehicle behavior in daily operation.

Specifications and technical data

• SKU: A2203509008-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2203509008
• Substitutable numbers: A2203509008, A 220 350 90 08, A2203509210, A 220 350 92 10, A0024206683, A 002 420 66 83, A2204230112, A 220 423 01 12
• Location on the vehicle: Rear, Right
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension

The described hub arm is part of the rear axle carrier system in the Mercedes S-Class W220 generation with the S350 engine. It operates in the rear axle area on the right side, responsible for:

• maintaining the correct position of the wheel hub relative to the suspension carrier,
• transferring longitudinal and lateral loads while driving,
• maintaining specified toe and camber angles,
• vehicle stabilization during braking and acceleration.

Thanks to the factory geometry, the proper operation of the entire suspension system is maintained, which translates into predictable handling and even tire wear.

Application in the Mercedes W220 S350 model

The component was designed specifically for the rear axle of the Mercedes S-Class W220 generation in the S350 version. This means it is compatible with:

• the rear suspension carrier design characteristic of this model,
• the spacing of mounting points on the body and carrier,
• the suspension performance parameters typical for the S-Class.

Selecting the correct right-side hub arm is crucial for post-collision repairs, replacing worn components, or restoring factory geometry settings.

Installation and operational characteristics

The rear axle carrier hub arm is intended for installation in place of the factory component, using original mounting points. In practice, this means:

• the ability to use standard service procedures,
• no need for modifications to the suspension carrier or body,
• easier geometry alignment after replacing the component.

After installation, it is recommended to perform a measurement and adjustment of the toe and rear axle wheel angles to fully utilize the potential of the suspension system in the Mercedes S-Class.

Benefits of using an original used component

Choosing an original, used hub arm for the Mercedes W220 S350 allows you to balance cost control with maintaining the factory design. Compared to replacements with uncertain specifications, the original component from disassembly better replicates the parameters intended by the manufacturer, which is important for ride comfort and the durability of other suspension components.

If you want to analyze the cost-effectiveness of using original, replacement, and used parts in your car more broadly, the following article will be helpful: Original, replacement, or used – which car parts are the most cost-effective?

Part selection by numbers and compatibility with other elements

The rear axle carrier hub arm should always be selected based on the manufacturer's part number and interchangeable numbers to ensure full compatibility with a specific version of the Mercedes S-Class. In practice, this means the possibility of:

• verifying fitment by OEM number,
• checking compatibility with reference numbers used in catalogs,
• seamless integration with other rear suspension components.

Thanks to this, you minimize the risk of installing an incorrect component, which is particularly important in advanced premium segment sedans.

If you are planning a comprehensive repair or upgrade of the rear axle suspension area in your Mercedes and need other elements from the same group, such as control arms, bushings, or carrier mounts, check the available parts in the category Mercedes suspension replacement kits.

For drivers who are also considering repairs within the drivetrain system, a guide describing when it is better to choose original used components instead of remanufacturing may be useful: Manual transmission failures in cars – why is an original used part a more sensible choice than remanufacturing?