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Brake master cylinder. Porsche 993 C2 1995-98 ❭ 99335591000
- Porsche 993 (911) C2 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Related, superseded, cross reference or alternative numbers for comparison.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 Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005

Fits:
Porsche 996 C2 M338 (M338 - Rear wheel drive)
Porsche Boxster 986
*without PSM
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99635591000
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005

Fits:
Porsche 996 C4 M339 (M339 - Four wheel drive)
Porsche Boxster 986
*with PSM
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99635591040
The product you are viewing cross references to these numbers
Fits:
Porsche 911 1977-89
Porsche 911 (930) Turbo 1975-89
Porsche 924 1976-85
Porsche 924 S 1986-88
Porsche 928 1978-85
Porsche 944 1982-90
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
251611243
The product you are viewing cross references to these numbers
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