Mercedes W906 W907 Front Spring Top Rubber Buffer Suspension A9073220400

Mercedes W906 W907 Front Spring Top Rubber Buffer Suspension is a specialized component from the Leaf springs and springs group, designed for use in the front suspension. This used, original Mercedes part helps maintain proper spring characteristics, reduces vibrations, and ensures stable suspension performance under demanding operating conditions.

Specifications and technical data

• SKU: A9073220400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9073220400
• Substitutable numbers: A9073220400, A 907 322 04 00
• Location on the vehicle: Front
• Category: Leaf & Coil Springs

Purpose and function in the front suspension

The rubber spring buffer in Mercedes W906 and W907 models operates in the front suspension as a flexible element between the spring and the chassis or auxiliary mount. Its functions include:

• damping vibrations transmitted from the spring to the vehicle structure,
• stabilizing spring performance under variable loads,
• reducing noise and vibrations in the cabin,
• protecting metal components from direct contact and excessive wear.

Thanks to the carefully selected hardness of the rubber compound, the buffer supports proper suspension geometry and helps maintain predictable vehicle behavior when driving with a load and on uneven surfaces.

Benefits of using an original rubber spring buffer

Using a dedicated rubber spring buffer in the front suspension provides a number of practical operational benefits:

• Better handling stability – proper support of the spring limits its uncontrolled deflection and improves the vehicle's response to steering maneuvers.
• Higher driving comfort – the flexible element effectively filters vibrations, which is particularly noticeable when driving on lower-quality roads.
• Protection of the spring and mounts – a properly functioning buffer reduces impact loads, which can extend the service life of the spring and mounting components.
• Consistency with the factory suspension design – the part is designed for the specific W906/W907 platform and works with the spring according to the vehicle manufacturer's specifications.

Installation characteristics and fitment

The buffer is designed for installation in the front part of the vehicle, in the spring mounting area. The design, adapted to the solutions used in Mercedes W906 and W907, facilitates proper seating of the component in factory mounting points. When replacing, it is recommended to:

• check the condition of the spring and surrounding mounts,
• inspect the contact surfaces for corrosion and debris,
• install while maintaining the correct operating position of the element.

This approach promotes uniform suspension performance and minimizes the risk of needing further service intervention in the near future.

Part condition and practical application

The offered rubber spring buffer is a used component, which in the case of suspension parts for commercial vehicles often represents a reasonable compromise between cost and functionality. This type of component is particularly useful for:

• routine suspension repairs in delivery vehicles,
• restoring proper spring performance after replacement or regeneration,
• reducing excessive vibrations and knocking coming from the front axle.

Selecting the correct spring buffer for a specific W906 or W907 version allows for maintaining predictable vehicle behavior in daily fleet and individual use.

If you are planning a comprehensive repair or upgrade of the leaf spring suspension area in your Mercedes and need other elements from the same group, such as additional buffers, mounting hardware, or spring brackets, check the available parts in the Mercedes leaf springs and springs category.

For users interested in a broader perspective on the operation of drivetrain elements and related suspension components, a guide on purchasing used parts may be useful – you can find it in the article Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.