Mercedes V251 Rear Axle Airmatic Spring Baloon Left Right N/O/S A2513200325

Mercedes V251 Rear Axle Airmatic Spring Baloon Left Right is a component from the Shock absorbers and struts group, designed for the rear axle of this vehicle series. Engineered as part of the pneumatic system, it supports stable vehicle handling, maintains proper ride height, and ensures driving comfort under varying loads.

Specifications and technical data

• SKU: A2513200325
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2513200325
• Substitutable numbers: A2513200325, A 251 320 03 25
• Location on the vehicle: Rear, Right, Left
• Category: Shocks, Struts & Assemblies

Purpose and vehicle placement

The air spring bellows operates on the rear axle, on either the left or right side, as part of the air suspension system. It is responsible for maintaining the specified ride height, compensating for trunk and rear cabin loads, and ensuring even weight distribution across the wheels. A properly selected air spring reduces body roll, improves stability at higher speeds, and increases the predictability of vehicle behavior in corners.

Technical and functional characteristics

As a component from the Shock absorbers and struts group, the air spring works in conjunction with shock absorbers to form a complete vibration damping system. The air spring provides the spring action, while the shock absorber controls suspension movement – this ensures the rear axle maintains stable contact with the road surface, which translates into more effective braking and better traction.

The appropriate design of the air spring allows for:

• maintaining a constant vehicle height regardless of the rear load,
• reducing vibrations transmitted to the body,
• more even tire wear on the rear axle,
• increased driving comfort on uneven roads.

Benefits of using an original Mercedes component

The air spring dedicated to the V251 series has been designed for specific weight parameters, suspension geometry, and pneumatic system operation. Using an original Mercedes solution ensures a proper fit to mounting points, correct interaction with leveling sensors, and predictable performance across the full load range.

In practice, this translates into:

• stable vehicle handling under full load,
• lower risk of uneven "sagging" on one side of the rear axle,
• proper interaction with safety systems dependent on suspension geometry.

Condition of the component and installation aspects

The offered air spring is in used condition, which allows for an economical repair of the system while maintaining the manufacturer's original specifications. Before installation, it is recommended to perform a standard check of the pneumatic system (tightness of lines, connectors, and valves) and verify the compressor's operation so that the newly installed component can operate under proper conditions.

Due to its location on the rear axle, the replacement of the air spring should be performed in accordance with service procedures for air suspension, including proper venting and re-calibration of the level, if required by the specific model.

Technical support and additional information

To better understand the role of components such as air springs, shock absorbers, or stabilizers in the entire chassis system, it is worth reading the educational material describing the relationships between these components – you can find them in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses practical aspects of suspension diagnostics and maintenance.

If you want to learn more about the advantages of using original, used components in premium cars and how they affect safety and repair cost-effectiveness, the article Quality assurance and OEM safety – why used original car parts are the best choice for your car? will be helpful.

If you are planning a comprehensive repair or upgrade of the suspension area in your Mercedes and need other elements from the same group, such as springs, shock absorbers, or complete struts, check the available parts in the Mercedes shock absorbers and struts category.