Mercedes W211 Rear Air Suspension Spring Bellows Left Right N/O/S A2113200925

Mercedes W211 Rear Air Suspension Spring Bellows Left Right is an original component of the automatic level control system, designed for the rear axle of this model. It provides stable support for the vehicle body, maintains the correct ride height, and ensures predictable vehicle behavior under load, which translates into safe and comfortable handling.

Specifications and technical data

• SKU: A2113200925-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2113200925
• Substitutable numbers: A2113200925, A 2113200925, A 211 320 09 25, BG
• Location on the vehicle: Rear, Right, Left
• Part type: Mount
• Category: Self-Levelling Suspension Parts

Purpose and function in the suspension system

The presented air spring operates within the rear axle air suspension system, on either the left or right side. It is responsible for maintaining the set vehicle height, compensating for the load of luggage and passengers, and working in conjunction with the automatic level control system. A correctly selected and airtight component allows for maintaining proper suspension geometry, even tire wear, and driving stability.

Compatibility and fitment for Mercedes W211

The air spring has been designed specifically for the Mercedes W211 platform, ensuring it fits the factory air suspension system of this model perfectly. The appropriate mounting shapes and the manufacturer-specified connection points allow for installation in place of the original component without the need for structural modifications. Using a dedicated component reduces the risk of leaks and problems with the compressor and leveling controller operation.

Performance characteristics and benefits of use

A functional rear air suspension spring contributes to:

• maintaining a constant vehicle height regardless of the load,
• stable vehicle handling when driving with a heavier load,
• proper cooperation with safety systems such as ABS or ESP,
• reducing the stress on other suspension components. As a result, the car maintains predictable reactions, and ride comfort remains at the level consistent with the manufacturer's specifications. Replacing a worn air spring with a functional component is particularly important in the case of symptoms such as the rear of the car sagging after parking or uneven height on both sides of the axle.

Component condition and installation aspects

The offered air spring is a used component, which allows for an economical repair of the suspension system while maintaining the original design specifications. Before installation, it is recommended to verify the tightness of the pneumatic system, the condition of the lines, and the correct operation of the compressor to ensure long-term and trouble-free operation. Installation should be performed by a person with experience in air suspension systems, following the vehicle manufacturer's procedures.

System expansion and related parts

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Mercedes and need other elements from the same group, such as additional air springs, components working with leveling, or elements supporting body stability, check the available parts in the Mercedes Automatic Level Control category. If you are considering a wider post-collision repair and want to consciously combine savings with maintaining factory vehicle parameters, a guide describing the selection of original used components may be helpful – more information can be found in the article Repairing a car after a collision: how to restore full efficiency using original used parts and not overpay?.

Summary

Mercedes W211 Rear Air Suspension Spring Bellows Left Right is a dedicated element of the automatic level control system, intended for installation on the rear axle on both sides of the vehicle. Using an original component allows you to restore the proper operation of the air suspension, improve driving stability, and maintain the comfort characteristic of the Mercedes brand, while optimizing repair costs through the use of a used part.