Mercedes S203 270 CDI Rear Left N/S Suspension Leg Brake Disc Wheel Hub

Mercedes S203 270 CDI Rear Left N/S Suspension Leg Brake Disc Wheel Hub is a complete component from the Suspension replacement kits group, designed for installation on the driver's side of the rear axle. Integrating the suspension strut, brake disc, and wheel hub into a single assembly facilitates servicing, reduces repair time, and allows for the consistent replacement of key chassis components.

Specifications and technical data

• SKU: A2033503908-9
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2033503908
• Substitutable numbers: A2033503908, A 203 350 39 08, A2033502456, A 203 350 24 56, A2034231998, A 203 423 19 98, A2104230612, A 210 423 06 12
• Weight: 150
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the chassis system

The presented suspension assembly is intended for the rear left side of the vehicle, which is crucial for both geometry and proper vehicle handling. It contains components responsible for supporting vertical loads, wheel guidance, and interaction with the braking system, making it a cohesive mounting module for the rear axle of the Mercedes C-Class S203 estate generation with a 270 CDI engine.

Combining the suspension strut with the hub and brake disc in one assembly reduces the risk of improper fitment of individual parts, which is essential for maintaining vehicle stability, even tire wear, and the correct operation of safety systems. This configuration promotes precise vehicle handling, especially at higher speeds and under loads typical for the estate version.

Kit construction and application benefits

The assembly includes the rear wheel suspension strut, hub, and brake disc, allowing it to be treated as a functional service module. This type of solution is particularly useful for post-accident repairs, replacing worn load-bearing elements, or restoring factory handling parameters after years of operation.

The main advantages of such a kit include:

• consistent matching of elements responsible for wheel guidance and braking,
• reduction in the number of separate assembly operations,
• easier inspection of the entire rear left suspension module condition,
• the ability to restore the factory suspension performance characteristics of the Mercedes C-Class S203 270 CDI.

Thanks to this solution, a mechanic can replace key components responsible for ride comfort, stability, and braking efficiency in one step, which translates into more predictable vehicle behavior.

Vehicle placement and assembly aspects

The assembly is designed for installation on the rear axle on the left side, which requires maintaining the correct orientation during installation. Proper seating of the element in the body and correct tightening of the bolted connections has a direct impact on suspension geometry, hub bearing operation, and uniform brake system performance.

During installation, it is recommended to:

• check the condition of other suspension elements on the same side (control arms, bushings, links),
• inspect the condition of brake lines and sensors interacting with the wheel hub,
• perform a measurement and, if necessary, an adjustment of the rear axle geometry after completing the work.

This approach allows for fully utilizing the potential of the kit and ensuring consistent operation of the chassis system in daily use.

Characteristics of the used product

The item comes from dismantling, which means it is a used part that retains the original Mercedes manufacturer design. In practice, this allows for economical repair while maintaining compliance with factory technical solutions. Using an original suspension module is beneficial wherever compatibility with the body, braking system, and other rear axle components is a priority.

Before installation, it is worth conducting a standard service check, including assessing the condition of the brake disc working surfaces, play within the hub, and the general condition of load-bearing elements. This allows for consciously planning any additional service activities and selecting appropriate consumables.

Selecting used suspension elements – practical knowledge

When choosing a used suspension kit for a Mercedes C-Class S203 270 CDI, it is worth paying attention to compatibility with the body and engine version, as well as rear axle mounting parameters. Comparing the construction with the element removed from the vehicle and consulting manufacturer catalogs can be helpful.

If you want to better understand the differences between standard and sports suspension, as well as take a conscious approach to purchasing used components, it is worth checking out our guide: Standard vs. sports suspension – construction differences and choosing used parts. The article discusses key parameters, application examples, and practical tips regarding matching elements based on the Global Parts offer.

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 struts, hubs, or complete mounting modules, check the available parts in the Mercedes suspension replacement kits category.