Mercedes R231 Brake Servo Booster Master Cylinder Braking Unit A2314300030

The Mercedes R231 Brake Servo Booster Master Cylinder is an original brake assist unit designed for the braking system of R231 series models. As a component from the Brake Boosters and Force Correctors group, it ensures stable amplification of pedal pressure, improving braking precision and the overall comfort of the system. A used, factory OEM component is a sensible choice for professional repairs or restoring factory braking parameters in Mercedes vehicles.

Specifications and technical data

• SKU: rhd-A2314300030
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2314300030
• Substitutable numbers: A2314300030, A 231 430 00 30
• Category: Brake Servos

Technical Characteristics of the Brake Servo and Master Cylinder Unit

The presented unit is a complete working assembly, comprising a brake servo integrated with the master brake cylinder. This configuration ensures a rigid, factory-set geometry for connection to the brake pedal and brake lines, which simplifies installation and reduces the risk of leaks. The use of an original Mercedes solution allows for maintaining the correct force ratio, pedal travel characteristics, and the braking system's response as intended by the manufacturer.

The component is designed for use in vacuum-assisted braking systems, where the servo is responsible for increasing the force exerted by the driver on the master cylinder piston. This enables high braking effectiveness with moderate pedal pressure, contributing to the vehicle's predictable behavior and driving comfort.

Application in the Mercedes R231 Braking System

The Mercedes R231 Brake Servo Booster Master Cylinder Braking Unit has been specifically designed for the R231 series braking system architecture, taking into account mounting locations, pedal linkage length, and outlet port positions. This means that with correct selection for a specific body style and engine variant, it can be installed in place of the factory unit without requiring structural modifications.

In practice, such a brake servo and master cylinder unit is used for:

• repairs following brake assist system failures,
• mechanical damage to the servo or master cylinder,
• restoring the factory configuration after incorrect modifications,
• comprehensive renovation of the braking system in Mercedes R231 vehicles.

Benefits of Using an Original Servo Unit

Choosing an original unit from the Brake Boosters and Force Correctors group allows for maintaining the parameters intended by the vehicle manufacturer. Compared to aftermarket alternatives with uncertain specifications, a factory component ensures:

• consistency of brake pedal operation with the vehicle's safety systems,
• proper cooperation with electronic braking control systems,
• adequate rigidity and durability of the servo and master cylinder housing,
• easier diagnostics and servicing due to compliance with Mercedes technical documentation.

For workshops specializing in the Mercedes brand, using an original servo unit with a master cylinder also means predictable installation times and a lower risk of complaints related to incorrect braking system operation.

Component Condition, Verification, and Selection

The offered item is used, meaning it comes from a dismantled vehicle and has been verified for its suitability for further use. Such components are often chosen for repairs where maintaining the original specification while optimizing costs is crucial. Before installation, a standard check of the brake system's tightness, proper bleeding, and configuration compliance with the specific model's service documentation is recommended.

To correctly select the brake servo and master cylinder unit for your car, pay attention to the manufacturer's markings, the body generation, and the vehicle's braking system configuration. If in doubt, a good reference point is the catalog data and information from the vehicle's identification plate, which helps avoid problems with installation and subsequent operation.

Braking System Expansion and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other components from the same group, such as servos, brake force correctors, or complete assist units, check the available parts in the Mercedes Brake Boosters and Force Correctors category.

When working with used braking system components, it is particularly important to adhere to safety procedures, ensure proper bleeding, and check cooperation with electronic systems. A practical guide to the used parts market for braking systems can help you select and assess the condition of such components – you can find it in the article Used Braking System: How to Safely Choose Discs, Calipers, and ABS?.

If you wish to broaden your knowledge of vehicle servicing in a wider context, including the selection of used OEM components in other systems, it is also worth consulting the guide Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort, which discusses best practices for choosing original used components.