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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
2 Pole / Prong.
On master cylinder.
Fits:
for LHD cars
Porsche 911 1968-76
Porsche 930 Turbo 3.0L 1975/77
Porsche 912 1968-69, 1976
Porsche 914-6 1970-71
Click 'Zoom in' for large parts diagram.
Diagram ref no 44
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90161311501
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C2S 1994-97
The primary hydraulic pressure generator for the braking system - translates your brake pedal input into brake fluid pressure that activates the brake calipers.
Fits:
Porsche 993 C2 1995 - 1998
Diagram ref no 9
When you press the brake pedal, the master cylinder generates hydraulic pressure that is distributed through the brake lines to all four wheels. This pressure forces the brake calipers to clamp the brake pads against the rotors, slowing the vehicle safely and effectively. A properly functioning master cylinder is essential for consistent brake pedal feel, stopping distance, and overall safety.
Function:
• Converts pedal force into hydraulic pressure to actuate the braking system
• Maintains proper fluid pressure to ensure balanced braking front to rear
• Works with the vehicle’s brake lines, reservoir, and calipers to deliver responsive braking performance on demand.
The master cylinder is a critical safety component of your braking system. Over time, seals and internal surfaces can wear or deteriorate, leading to:
• Spongy or inconsistent pedal feel
• Brake fluid leaks or loss of pressure
• Reduced braking performance or uneven stopping
• Potential safety hazards if left unaddressed.
Replacing a worn or failing unit helps restore proper hydraulic pressure, pedal feel, and brake system performance - keeping your Porsche responsive and safe.
Replace the brake master cylinder if you notice:
• Soft, sinking, or inconsistent brake pedal feel
• Visible brake fluid leaks around the master cylinder
• Air entering the brake lines or ineffective braking response
• During a brake system rebuild, fluid flushing, or seal failure diagnostics
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99335591000
The product you are viewing cross references to these numbers
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Brake Servo Cylinder Gasket
High-quality replacement brake servo cylinder gasket designed for Porsche 964 and 993 models, including Carrera 4, Turbo, and RS variants.
This gasket provides a secure seal between the brake servo
(booster) and cylinder assembly, ensuring proper vacuum operation and
consistent braking performance. It is a critical component in maintaining
braking system efficiency and safety.
Fits:
Diagram ref no 22
Manufactured to OEM specifications, this gasket offers precise fitment and reliable sealing performance—ideal for maintenance, repair, or restoration of high-performance Porsche braking systems.
Key Features
• Direct replacement brake servo cylinder gasket
• Suitable for Porsche 964 and 993 Carrera 4, Turbo, and RS models
• Ensures proper vacuum sealing within braking system
• OEM-style fit and performance
• Durable material for long-term reliability
• Ideal for servicing, repair, or restoration
Function and Purpose
This gasket seals the connection within the brake servo system.
It helps to:
• Maintain correct vacuum pressure for brake assistance
• Prevent air leaks in the braking system
• Ensure consistent brake pedal feel
• Support safe and reliable braking performance
Why Replace Your Brake Servo Gasket
Brake system seals can degrade over time due to heat and age.
Common issues include:
• Vacuum leaks reducing brake assistance
• Hardened or cracked gasket material
• Inconsistent braking performance
• Reduced system efficiency
Replacing the gasket restores proper braking function and safety.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96435585100
The product you are viewing cross references to these numbers