Ford Fiesta Mk7 Brake Servo Booster Master Cylinder Petrol 8V51-2B195-AF

Visual condition of the part

The product shows signs of use visible in the photos. Ford Fiesta Mk7 Brake Servo Booster Master Cylinder Petrol is a complete brake servo and master cylinder assembly designed for petrol engine systems. This component belongs to the Brake Servos and Proportioning Valves group, responsible for providing stable brake assistance and predictable brake pedal pressure modulation.

Specifications and technical data

• SKU: RHD-8V51-2B195-AF
• Mark: Ford
• Condition: Used
• OEM Part Number: 8V51-2B195-AF
• Substitutable numbers: 8V51-2B195-AF, 8V512B195AF, 8V51-2140-AB, 1746593, 8V51-2002-BC, 2646586
• Fuel type: Petrol
• Part type: Brake Servo & Master Cylinder
• Category: Brake Servos

Purpose and function in the braking system

The presented brake servo and master cylinder assembly has been specifically designed for use with petrol engines in the Ford Fiesta Mk7. It assists the driver during braking by utilizing vacuum to reduce the force required on the pedal, which translates into a more predictable vehicle response and better control over the car in daily operation. The combination of the vacuum booster and the master cylinder allows for efficient pressure transfer to the brake circuits, ensuring balanced operation of the front and rear axles. As a result, the system maintains stability during both calm city driving and sudden emergency maneuvers.

Benefits of using an original Ford component

The original Ford solution guarantees a proper fit to the engine bay geometry and compatibility with factory mounts and brake lines. Using a component from the same design group minimizes the risk of issues with bleeding, leaks, or incorrect brake pedal operation. The item comes from a used vehicle, which allows for an economical repair while maintaining performance characteristics close to factory standards. For many users, this is a reasonable compromise between cost and quality, especially for older vehicles where reliability and proper braking system operation are the priority.

Selection and technical compatibility

The brake servo and master cylinder assembly has been configured for use with the braking system in petrol versions, which is significant due to the method of vacuum generation and the operating characteristics of the powertrain. Proper selection based on fuel type reduces the risk of improper assistance, a pedal that is too hard or too soft, and uneven distribution of braking force. The product has assigned catalog numbers and interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration. Before installation, it is recommended to compare the markings with the currently installed part or service documentation to ensure full compatibility with the braking system of the given vehicle.

Professional installation and operation

Due to its critical role in driving safety, installation by a qualified service center is recommended, following procedures for bleeding the braking system and checking for leaks. After installation, it is advisable to perform a test drive, paying attention to the linearity of the pedal operation, the absence of noise, and the balanced behavior of the vehicle during braking. Regular inspection of the brake fluid, lines, and other system components will allow you to fully utilize the potential offered by this servo and master cylinder assembly, ensuring stable operation and consistent braking performance over a long period of use. If you are planning a comprehensive repair or upgrade of the braking zone in your Ford and need other elements from the same group, such as servos, brake proportioning valves, or related assistance components, check the available parts in the Ford Brake Servos and Proportioning Valves category. For drivers who are also concerned about thermal comfort in the vehicle and want to consciously choose used OEM components, a guide on air conditioning and heating may be helpful – more practical tips can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort.