Mercedes-Benz E-Class W210 Brake Booster Servo Master Cylinder A0044308930

Mercedes-Benz E-Class W210 Brake Booster Servo Master Cylinder integrated with the brake master cylinder is a key component of the braking system, responsible for the stable transmission of pedal pressure into hydraulic pressure within the brake circuits. This item from the Brake boosters and pressure regulators group has been designed specifically for Mercedes-Benz engineering, ensuring the correct assistance characteristics and predictable vehicle behavior during braking. This is an OEM solution that allows you to restore the factory performance parameters of the braking system in your Mercedes E-Class W210.

Specifications and technical data

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

Purpose and role in the braking system

The brake servo integrated with the master cylinder is responsible for the efficient use of vacuum to amplify the force applied to the brake pedal. In practice, this means:

• reduced pedal effort while maintaining high braking efficiency,
• stable pressure distribution in the brake circuits,
• repeatable system performance under typical road conditions.

Thanks to the proper selection of the leverage ratio and servo chamber capacity, the braking system maintains the linear pedal response typical of a Mercedes, which translates into predictable and comfortable handling.

Compatibility with the Mercedes-Benz platform

The offered component has been developed for the Mercedes-Benz E-Class W210 generation, maintaining factory mounting points and hydraulic connection geometry. This means:

• perfect fit for the stock bulkhead and pedal assembly,
• compatibility with the original brake master cylinder and line routing,
• preservation of factory assistance characteristics and pedal travel.

Using an original solution from the Brake boosters and pressure regulators group minimizes the risk of bleeding issues, leaks, or improper ABS/ESP system operation resulting from the use of unsuitable aftermarket replacements.

Technical characteristics and benefits of using OEM parts

The servo integrated with the master cylinder in this model has been designed for the specific vehicle weight, load distribution, and axle configuration. Using the original design ensures:

• adequate vacuum reserve during repeated braking,
• proper cooperation with brake force distribution between axles,
• consistency with factory safety system settings.

For workshops and users, this means easier diagnostics and the ability to use factory service procedures without the need for parameter adaptation or installation modifications.

Component condition and installation aspects

The offered component is in used condition, which allows for an economical repair of the braking system while maintaining the manufacturer's original specifications. In practice, installation involves:

• removing the existing servo with the master cylinder,
• transferring hydraulic and vacuum connections,
• bleeding the system according to the service procedure for the specific model.

Using an OEM part facilitates the mechanic's work because the mounting points, rod lengths, and port spacing are consistent with the vehicle's factory configuration, which reduces installation time and the risk of leaks.

Brake system expansion in Mercedes-Benz

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 servos, brake pressure regulators, or related hydraulic components, check out the available parts in the Mercedes brake boosters and pressure regulators category.

Technical knowledge and vehicle operation

When working on vacuum systems, cabin heating, or air conditioning, it is worth paying attention to the general condition of auxiliary installations in the vehicle. For users who want to better plan service and the selection of used OEM components, we have prepared a practical guide: Air conditioning and heating – part selection and maintenance for year-round comfort. There you will find tips on how to combine brake component replacement with other service work to optimize costs and vehicle downtime.