Mercedes W212 Strut Rear Left Right Shock Absorber A2123204030

The Mercedes W212 Rear Left Right Shock Absorber is an original vibration damping element designed for installation on the rear axle, either on the left or right side. Its factory design ensures consistent vehicle handling, body stability, and predictable suspension behavior. This is the ideal solution for users seeking a part that maintains its original geometry and operating parameters in line with manufacturer standards.

Specifications and technical data

• SKU: A2123204730
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2123204730
• Substitutable numbers: A2123204730, A 212 320 47 30, A2123204030, A 212 320 40 30
• Location on the vehicle: Rear, Right, Left
• Category: Shocks, Struts & Assemblies

Vehicle Application and Placement

The shock absorber presented here belongs to the Shock Absorbers and Struts category and is designed for the rear axle of the vehicle. Its construction allows for installation on both the right and left sides, simplifying part selection during suspension service. Its placement on the rear of the vehicle contributes to controlling spring compression, stabilizing the body during acceleration, braking, and driving over uneven surfaces.

A properly selected rear shock absorber for the Mercedes E-Class W212 generation influences:

• maintaining constant tire contact with the road surface,
• reducing body roll under load,
• more predictable vehicle behavior in corners.

Technical Specifications and Compatibility

The Mercedes W212 Rear Left Right Shock Absorber is an OEM part, meaning it retains factory operating parameters and fits original mounting points on the body and control arms. The part has a designated manufacturer part number and associated interchangeable numbers, which facilitates verification of compatibility with specific equipment versions and vehicle model years.

Thanks to the use of original construction:

• correct working length and damping characteristics are maintained,
• fitting to standard mounting points requires no modifications,
• the suspension system operates within the range intended by the manufacturer.

To ensure even more precise part selection for a specific vehicle, it is advisable to consult the guide on verifying parts by OEM numbers: check how to safely select parts by manufacturer numbers.

Role in the Suspension System and Driving Safety

The rear shock absorber in the Mercedes W212 is responsible for controlled damping of spring movements and limiting excessive body roll. In practice, this translates to stable handling at higher speeds, better traction on uneven surfaces, and more predictable behavior during emergency maneuvers. A functional component of this type supports the operation of safety systems such as ABS and ESP by maintaining tire contact with the road.

If you wish to gain a broader understanding of how shock absorbers work with control arms and stabilizers in various car models, refer to the guide: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers. This will help you better plan the service of the entire system, not just individual components.

Part Condition and Benefits of Choosing Original

The shock absorber offered is a used part, which translates to a favorable compromise between purchase cost and the retention of original construction. Compared to aftermarket replacements of unknown origin, an OEM part ensures:

• factory fit to the body and suspension of the Mercedes W212,
• consistent operating parameters with other system components,
• reduced risk of installation issues.

Choosing an original rear shock absorber allows you to maintain the characteristic handling typical of this Mercedes generation, without undesirable changes in driving comfort or stability.

Summary

The Mercedes W212 Rear Left Right Shock Absorber is a sensible solution for users who want to restore proper rear suspension function while preserving factory driving characteristics. Its original construction, compatibility with both sides of the rear axle, and integration with the Mercedes suspension system make it a practical choice for repairing or refurbishing the rear vibration damping system.