Porsche Cayman Boxster 982 Brake Servo Master Cylinder Booster 98135502530

Porsche Cayman Boxster 982 Brake Servo Master Cylinder Booster is an original brake system component from Porsche, designed for the 982 generation Cayman and Boxster models. This master brake servo, classified under the Brake Servos and Proportioning Valves category, ensures a stable transfer of pressure to the brake pedal, resulting in predictable and comfortable operation of the entire system.

Specifications and technical data

• SKU: 98135502530
• Mark: Porsche
• Condition: Used
• OEM Part Number: 98135502530
• Substitutable numbers: 98135502530, 981 355 025 30, 99135512532, 991 355 125 32, 98135513029, 981 355 130 29, 99135501302, 991 355 013 02
• Part type: Brake Servo & Master Cylinder
• Category: Brake Servos

Purpose and function in the brake system

The presented brake servo is a key link between the brake pedal and the system's hydraulics. It is responsible for amplifying the driver's braking force, ensuring smooth braking and predictable vehicle response even during dynamic driving. Using an original Porsche component allows for maintaining the factory pedal feel, which is particularly important in sports models like the Cayman and Boxster.

This element works in conjunction with the master brake cylinder, stabilizing pressure in the circuits and enabling precise modulation of braking force on each axle. A properly selected servo reduces driver fatigue during city driving and improves vehicle control in emergency situations.

Advantages of using an original Porsche servo

Using an original servo from the Brake Servos and Proportioning Valves group in a Porsche Cayman or Boxster provides a number of practical benefits:

• maintaining the factory brake pedal characteristics,
• consistency with other OEM brake system components,
• appropriate boost ratio tailored to the vehicle's weight and performance,
• compatibility with factory safety systems (ABS, ESP, electronic stability control systems),
• reducing the risk of system malfunction resulting from the use of aftermarket parts with different characteristics.

Thanks to this solution, the driver receives consistent, predictable, and repeatable brake performance, which is important both in daily use and during more dynamic driving.

Installation characteristics and part selection

The servo has been designed as an OEM component for a specific Porsche platform, which facilitates fitting to factory mounting points and the existing hydraulic and vacuum installation. When selecting the part, it is worth paying attention to:

• compatibility with the body generation and engine version,
• use of appropriate catalog numbers and interchangeable part numbers,
• consistency with the existing master brake cylinder.

Proper selection of the component according to the OEM part number and reference numbers helps avoid installation issues and ensures correct operation with other brake system components.

Condition and service application

The offered item is a used part, which represents an attractive cost-effective solution while maintaining the manufacturer's original specifications. Such components are often chosen for:

• post-accident repairs in the bulkhead area,
• damage to the vacuum system or internal servo leaks,
• restoration of Porsche vehicles where preserving original components is a priority.

Replacing the servo is particularly recommended when symptoms such as a hard brake pedal, uneven assistance, or audible leaks near the engine bulkhead occur.

Related Porsche brake system components

If you are planning a comprehensive repair or upgrade of the braking zone in your Porsche and need other elements from the same group, such as brake master cylinders, proportioning valves, or additional assistance modules, check the available parts in the Porsche Brake Servos and Proportioning Valves category.

To better plan vehicle service and combine brake system work with the maintenance of other systems, it is worth checking out the guide on year-round driving comfort – detailed tips can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort, which discusses the selection of used OEM components and service schedules.