Mercedes Sprinter W906 Brake Servo Booster Master Cylinder Unit A9064301408

Mercedes Sprinter W906 Brake Servo Booster Master Cylinder Unit is an original brake servo and master cylinder assembly designed for the W906 generation Sprinter braking system. Using a complete, factory-spec unit ensures consistent hydraulic and vacuum booster performance, which translates into a stable brake pedal feel and predictable vehicle response during daily operation.

Specifications and technical data

• SKU: rhd-A9064301408-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9064301408
• Substitutable numbers: A9064301408, A 906 430 14 08, A9064310027, A 906 431 00 27, A9064310101, A 906 431 01 01, A0024315202, A 002 431 52 02
• Category: Brake Servos

Technical characteristics of the brake servo and master cylinder assembly

The presented assembly belongs to the Brake Servos and Proportioning Valves category, which are components responsible for the proper conversion of brake pedal pressure into hydraulic system pressure. Combining the servo and master cylinder into a single unit minimizes the risk of leaks at connection points and facilitates the inspection of the entire module during maintenance.

Original manufacturing for the Mercedes brand ensures the preservation of factory operating parameters, such as piston travel, booster characteristics, and compatibility with the ABS/ESP system used in the Sprinter W906. As a result, the braking system maintains the pressure build-up dynamics and stability during heavy braking as intended by the manufacturer.

Purpose and application in the Mercedes Sprinter W906

This brake servo and master cylinder assembly has been designed specifically for the braking system architecture of the Mercedes Sprinter W906, taking into account the characteristics of a commercial vehicle – higher curb weight, variable loads, and frequent operation in urban conditions. Using a complete unit allows for:

• restoring proper brake assistance after a servo or master cylinder failure,
• reducing the "spongy" brake pedal feel resulting from internal component wear,
• maintaining proper braking force modulation at various speeds and loads.

For fleet vehicles and vehicles in continuous operation, choosing a complete, original module is a beneficial solution in terms of durability and consistency of operating parameters.

Benefits of using an original Mercedes assembly

Choosing an original brake servo and master cylinder assembly for the Sprinter W906 provides a number of practical advantages in daily vehicle use:

• Factory compatibility – perfect fit for the bulkhead geometry, brake pedal, and brake lines intended for this model.
• Consistent operating characteristics – maintaining the manufacturer-intended force ratio and pedal travel, which helps the driver precisely modulate braking.
• Reduced risk of system bleeding issues – the complete unit simplifies the service procedure compared to replacing individual components.
• Stability of the braking system during intensive use, typical for delivery and service vehicles.

Condition, verification, and part selection

This item comes from the used parts group, which allows for an economical repair of the braking system while maintaining the original manufacturer specifications. Before installation, it is recommended to perform a standard check of the system for leaks, the condition of the lines, and the quality of the brake fluid to fully utilize the capabilities offered by this assembly.

To ensure correct selection, it is worth comparing the markings on the removed module with the data in the product's technical specification and verifying compatibility with the body version and braking system of your specific Sprinter W906. This minimizes the risk of improper fitment and additional service downtime.

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

Safety, driving comfort, and service knowledge

A properly functioning brake servo and master cylinder has a direct impact on driving safety, braking distance, and driver comfort – especially in urban traffic, where frequent braking requires stable and predictable pedal operation. For vehicles used year-round in varying weather conditions, it is worth taking care of other key vehicle systems in parallel.

To better plan service maintenance and the selection of used OEM components for your car, you can use the practical tips described in the article Air conditioning and heating – part selection and maintenance for year-round comfort, which discusses the principles of choosing and operating components that affect the comfort and safety of using your car.