Mercedes-Benz E-Class W210 S210 Brake Booster Servo Master Cylinder A0054303330

Mercedes-Benz E-Class W210 S210 Brake Booster Servo Master Cylinder integrated with the brake master cylinder is a key component of the braking system, responsible for the stable transfer of pedal pressure into hydraulic force. This item from the Brake Boosters and Proportioning Valves group has been designed specifically for the E-Class W210/S210 generation models, ensuring a proper fit and predictable operating characteristics. The offered unit is an original Mercedes component, intended for professional repair or restoring factory braking parameters.

Specifications and technical data

• SKU: rhd-A0054303330
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0054303330
• Substitutable numbers: A0054303330, A 005 430 33 30, A2024300202, A 202 430 02 02, A0054308301, A 005 430 83 01, A0044308930, A 004 430 89 30, KZ
• Category: Brake Servos

Purpose and function in the braking system

The brake booster integrated with the master cylinder is responsible for assisting the force applied by the driver to the brake pedal, utilizing engine vacuum. Thanks to this, the braking system in the Mercedes E-Class W210/S210 reacts predictably, and the required pedal pressure remains at a comfortable level, even during emergency braking.

A properly selected brake booster and proportioning valve influence:

• stable pressure distribution between the vehicle's axles,
• repeatable brake pedal characteristics,
• safe vehicle behavior during sudden braking and on slippery surfaces.

Original Mercedes component – fitment and compatibility

The presented item comes from the Mercedes parts line, which means it maintains the factory geometry, mounting points, and operating parameters specified by the vehicle manufacturer. For systems as sensitive as brakes, using an original brake booster with a proportioning valve minimizes the risk of malfunction, a pedal that is too soft or too hard, and bleeding issues.

The original design ensures:

• compliance with the factory brake force distribution,
• correct positioning of hydraulic ports and connections,
• easier integration with the existing system without modifications.

Installation characteristics and service application

A brake booster with a master cylinder of this type is primarily used for:

• replacing a worn or leaking brake booster,
• repairs after collisions involving the firewall and engine bay,
• comprehensive restoration of the braking system in a Mercedes-Benz E-Class W210/S210.

Thanks to the preservation of the factory design, the element can be installed in place of the old component without the need to modify mounts or lines, which shortens work time and facilitates verification of correct installation. This solution is particularly beneficial for workshops specializing in the Mercedes brand, where repeatability and predictable service results are essential.

Condition and benefits of choosing a used part

The offered subassembly is in the category of used brake system components, which allows for an economical repair while maintaining the manufacturer's original specifications. In the case of brake boosters and proportioning valves, choosing a verified used part is often a favorable compromise between cost and quality, especially in older vehicle generations.

To maximize the potential of such components, it is worth checking out practical tips regarding the operation and maintenance of used subassemblies – you can find them in the article How to extend the life of used car parts, which discusses, among other things, good installation and service practices.

Comprehensive Mercedes brake system service

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as pumps, proportioning valves, or additional booster modules, check the available parts in the Mercedes Brake Boosters and Proportioning Valves category.

While working on the braking system, it is also worth taking care of the thermal comfort inside the vehicle, which affects driver concentration and driving safety. Practical tips regarding the selection and servicing of components responsible for air conditioning and heating can be found in the guide Air conditioning and heating – part selection and maintenance for year-round comfort, which describes, among other things, the principles of working with used OEM components.