Mercedes-Benz M-Class ML W163 Brake Servo Master Cylinder A1634300630

Mercedes-Benz M-Class ML W163 Brake Servo Master Cylinder is an original brake system component from the Brake Servos and Pressure Regulators group, designed for use in M-Class W163 generation models. This OEM solution ensures proper brake pedal force assistance and stable hydraulic operation, which translates into predictable, safe braking in everyday use.

Specifications and technical data

• SKU: A0014300708
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0014300708
• Substitutable numbers: A1634300630, A 163 430 06 30, A0014300708, A 001 430 07 08, A0024313402, A 002 431 34 02, A0004317201, A 000 431 72 01, EM
• Category: Brake Servos

Purpose and function in the brake system

The presented brake servo with master cylinder has been designed specifically for the brake system of the Mercedes M-Class W163 SUV. This component is responsible for amplifying the pedal force and generating appropriate pressure in the brake circuits, which is crucial for the braking efficiency of a heavier vehicle with all-wheel drive.

Combining the servo and the master cylinder into one assembly reduces the number of hydraulic connections, facilitates installation and maintenance, and helps maintain system tightness. As a result, the driver receives more linear pedal feel and repeatable brake response in various road conditions.

Benefits of using an original servo and master cylinder assembly

Using the original brake servo–master cylinder assembly in a Mercedes M-Class W163 allows you to maintain the factory operating parameters of the brake system. The most important advantages include:

• maintaining the brake pedal assistance characteristics designed by the manufacturer,
• proper cooperation with other system components, such as lines, calipers, and brake pressure regulators,
• proper geometric fit to the bulkhead and brake pedal,
• reduced risk of bleeding issues and leaks compared to random aftermarket replacements.

Thanks to this solution, you can restore stable braking performance in a vehicle where the previous servo or master cylinder showed signs of wear, such as a hard pedal, uneven assistance, or increased braking distance.

Condition, origin, and service application

The offered element is an original Mercedes component sourced from dismantling, which means it was previously used in a vehicle but retains the design and parameters specified by the manufacturer. This type of part is particularly attractive for repairs of older M-Class W163 units, where a reasonable service cost is important while maintaining OEM components.

The brake servo with master cylinder will work well both for standard replacement of a worn assembly and for more extensive work on the brake system, e.g., after a collision or after long-term operation in difficult conditions. In any case, it is worth ensuring proper installation and system bleeding to fully utilize the capabilities of this component.

Selection, compatibility, and technical aspects

Before installation, it is recommended to verify the part's compatibility with the specific engine version and vehicle equipment using the OEM part number and available interchangeable numbers in the service documentation or manufacturer's catalog. This avoids problems with fitting connectors, mounts, and brake pedal travel.

In service practice, replacing the brake servo–master cylinder assembly in a Mercedes M-Class W163 is considered an effective way to eliminate problems with unstable assistance, pedal sinking, or uneven system operation during heavy braking. A correctly selected and installed component contributes to increased driving safety and comfort of using the vehicle in city traffic and on the road.

Expanding brake system service and comfort zone

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 additional servos, brake pressure regulators, or related components, check the available parts in the Mercedes Brake Servos and Pressure Regulators category.

During major service work on an M-Class vehicle, it is worth simultaneously taking care of systems that affect driving comfort. For air conditioning and heating systems, a guide describing the selection of used OEM components, maintenance schedules, and typical service procedures will be helpful – detailed information can be found in the article "Air conditioning and heating – part selection and maintenance for year-round comfort".