Porsche Cayman 987 911 997 Brake Servo Booster Master Cylinder 99735502502

Porsche Cayman 987 / 911 997 Brake Booster from the Brake Boosters and Proportioning Valves category is an original brake system component designed for Porsche models. This solution is engineered for precise brake force modulation, a stable pedal feel, and predictable vehicle response, which is crucial for both everyday driving and spirited performance.

Specifications and technical data

• SKU: 99735502502-1
• Mark: Porsche
• Condition: Used
• OEM Part Number: 99735502502
• Part type: Brake Servo & Master Cylinder
• Category: Brake Servos

Purpose and Function in the Braking System

The presented component serves as the central link between the brake pedal and the hydraulic system, responsible for amplifying braking force and maintaining stable pressure in the brake lines. In Porsche vehicles from the Cayman 987 and 911 997 series, a properly selected brake booster with a proportioning valve translates to:

• more predictable brake pedal characteristics,
• better vehicle control during hard braking,
• seamless integration with the factory ABS and stability control systems.

Benefits of Using an Original Porsche Component

Original Porsche solutions for brake boosting are designed considering the specific vehicle body geometry, weight, and brake force distribution. Using such a component helps maintain:

• factory brake system tuning – without the risk of altered engagement points or a "spongy" pedal feel,
• proper synergy with the stock brake master cylinder and calipers,
• consistency with the characteristics of sports suspension and high-grip tires. For Porsche owners, this means preserving the precise brake feel characteristic of the brand, which is important both on the road and on the track.

Characteristics of a Used Component

This component is sourced from a dismantled vehicle, allowing for the combination of original Porsche quality with an attractive price compared to new parts. Used brake boosters and proportioning valves are often chosen for:

• repairs following front-end collisions,
• restoring a vehicle to factory condition after modifications,
• comprehensive brake system overhauls for track-driven vehicles. To maximize the potential of used parts and minimize future wear, it is advisable to consult the practical tips in the article How to Extend the Lifespan of Used Car Parts?.

Professional Application in Service and Motorsport

Porsche brake boosters and proportioning valves are frequently utilized not only in standard repairs but also in track-focused projects where consistency and load resistance are paramount. This type of component performs well in:

• professional workshops specializing in the Porsche brand,
• shops preparing cars for track days,
• restomod projects where the original brake system architecture is preserved. A correctly selected brake booster allows for the full utilization of tire and suspension capabilities without excessively lengthening the braking distance.

Expanding the Porsche Braking System

If you are planning a comprehensive repair or upgrade of the braking zone in your Porsche and require other parts from the same group, such as brake master cylinders, proportioning valves, or additional booster components, explore the available parts in the Porsche Brake Boosters and Proportioning Valves category.