Volkswagen Golf Mk4 Brake Servo Booster Master Cylinder 1J2614105D

Volkswagen Golf Mk4 Brake Servo Booster Master Cylinder integrated with the master brake cylinder is an original brake system component designed for Volkswagen models. This complete servo and master cylinder assembly ensures stable, predictable brake performance and allows for the restoration of factory braking power parameters in the vehicle. Thanks to its OEM design, it is a solution perfectly matched to the stock installation, which facilitates assembly and subsequent operation.

Specifications and technical data

• SKU: RHD-1J2614105D
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1J2614105D
• Substitutable numbers: 1J2614105D, 1J2 614 105 D, 1J2614106B, 1J2 614 106 B, 1J2614019, 1J2 614 019, 1J2611301A, 1J2 611 301 A
• Part type: Brake Servo
• Category: Brake Servos

Technical characteristics and intended use

The presented assembly belongs to the Brake servos and pressure regulators group, responsible for the proper conversion of brake pedal pressure into hydraulic system pressure. Using an original Volkswagen solution allows for maintaining compliance with the factory brake system configuration, including mounting geometry, pedal rod length, and assistance characteristics. The component is intended for installation in Volkswagen vehicles, particularly in the Golf Mk4 generation, where it works with the stock master brake cylinder, lines, and ABS/ESP module (if present in the given configuration). The servo assembly with the master cylinder is a key component for maintaining proper braking efficiency and vehicle stability during intensive use.

Construction of the servo and master cylinder assembly

The system consists of a vacuum diaphragm servo connected to the master brake cylinder. The servo is responsible for amplifying the force exerted on the pedal, while the master cylinder converts it into pressure in the brake circuits. This configuration ensures:

• more comfortable brake pedal operation,
• stable braking force modulation,
• consistent operation with the factory ABS/ESP system,
• preservation of the stock brake system characteristics. Thanks to the use of the original Volkswagen design, the assembly is compatible with factory brackets, mounts, and lines, which limits the need for modifications during installation.

Benefits of using an original brake servo

Choosing an original servo and master cylinder assembly for the Volkswagen Golf Mk4 allows for maintaining the consistency of the entire brake system. The most important advantages include:

• Factory fit – compatibility with the body structure, brake pedal, and lines, which facilitates assembly and service.
• Predictable braking characteristics – preservation of stock pedal travel and firmness, essential for daily use and dynamic driving.
• Consistency with other system components – proper cooperation with the ABS/ESP module and rear axle brake pressure regulators (if present).
• The ability to use the existing installation without the need to adapt non-factory solutions.

Condition, verification, and service application

The offered component comes from the used parts group, which allows for economical brake system repair while maintaining the manufacturer's original specifications. This type of component is particularly useful for:

• replacing a worn or leaking brake servo,
• repairing the system after corrosion or mechanical damage in the bulkhead area,
• restoring the factory configuration after unsuccessful brake system modifications. Before installation, a standard service procedure is recommended, including checking the system for leaks, bleeding the brake circuits, and verifying the correct operation of the brake pedal. This allows you to fully utilize the potential of the offered assembly and restore safe braking parameters.

Related system components and additional information

If you are planning a comprehensive repair or upgrade of the braking zone in your Volkswagen and need other elements from the same group, such as additional servos, brake pressure regulators, or compatible modules working with the system, check the available parts in the Volkswagen brake servos and pressure regulators category. When working on the brake system and components interacting with the engine and vacuum installation, it is also worth taking care of the general condition of the vehicle's equipment. In the context of driving comfort and safety, a guide on selecting and servicing components responsible for cabin conditions may be helpful – detailed tips can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort.