Clutch Slave Cylinder
Clutch slave cylinder bleed nipple. Porsche 911 1987-89 / 964 / 993 G50/50 Gearbox
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Fits:
Porsche 911 1987-89 with G50 Gearbox
Porsche 964 1990-94 with G50 Gearbox
Porsche 993 1994-97 with G50 Gearbox
Click picture for large parts diagram.
Diagram Ref No 13
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92835194503
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Clutch slave cylinder. Porsche 911 1987-89 / 964 / 993 G50/50 GearBox
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Fits:
Porsche 911 1987-89 with G50/50 GearBox
Porsche 964 1990-94 with G50/50 GearBox
Porsche 993 1994-97 with G50/50 GearBox
A clutch that is engaged/disengaged via hydraulic fluid instead of a cable uses a Clutch Master and Clutch Slave Cylinder. When depressing the clutch pedal a lever is squeezed, forcing hydraulic fluid through hydraulic lines to a "slave cylinder" which houses a piston. The piston forces a push rod to engage or disengage the clutch. A clutch master cylinder that contains the hydraulic fluid sits on a support har near the clutch lever. When either the Master or Slave Cylinder fail the clutch is unable to be disengaged.
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95011623712
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Clutch slave cylinder. Porsche 911 1987-89 / 964 / 993 G50/50 GearBox
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Fits:
Porsche 911 1987-89 with G50/50 Gearbox
Porsche 930 Turbo 3.3L 08/1988-07/1989
Porsche 964 1990-94 with G50/50 Gearbox
Porsche 993 1994-97 with G50/50 Gearbox
A clutch that is engaged/disengaged via hydraulic fluid instead of a cable uses a Clutch Master and Clutch Slave Cylinder. When depressing the clutch pedal a lever is squeezed, forcing hydraulic fluid through hydraulic lines to a "slave cylinder" which houses a piston. The piston forces a push rod to engage or disengage the clutch. A clutch master cylinder that contains the hydraulic fluid sits on a support har near the clutch lever. When either the Master or Slave Cylinder fail the clutch is unable to be disengaged.
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95011623712
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Clutch slave cylinder. Porsche 964 1992-95
- Porsche 964 (911) C2 1989-93
- 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

Fits:
Porsche 964 1992-95 all models
A clutch that is engaged/disengaged via hydraulic fluid instead of a cable uses a Clutch Master and Clutch Slave Cylinder. When depressing the clutch pedal a lever is squeezed, forcing hydraulic fluid through hydraulic lines to a "slave cylinder" which houses a piston. The piston forces a push rod to engage or disengage the clutch. A clutch master cylinder that contains the hydraulic fluid sits on a support har near the clutch lever. When either the Master or Slave Cylinder fail the clutch is unable to be disengaged.
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92833277512
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Rubber cap bleed nipple. Porsche 356 / 911 / 964 / 993 / 928 / 944
- 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 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- 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) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 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
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 356B 1959-63
- Porsche 912E 4CYL 1976
Bleed nipple cap for brake caliper and clutch slave cylinder

Fits:
Porsche 356B
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 944 - 1982 to 1989
Porsche 928 - 1978 to 1990
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
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90135192712
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Porsche Clutch Slave Cylinders | Hydraulic Precision & Smooth Gear Engagement
The clutch slave cylinder is a vital component in your Porsche’s hydraulic clutch system. Working in tandem with the clutch master cylinder, it converts hydraulic pressure into mechanical movement to disengage the clutch, allowing smooth and precise gear changes. A properly functioning slave cylinder ensures a consistent clutch pedal feel and reliable performance on every drive.
At Design911, we supply premium clutch slave cylinders designed to meet or exceed original performance standards. Each component is precision-engineered using high-grade materials and corrosion-resistant seals to maintain hydraulic pressure, resist fluid leaks, and deliver smooth, consistent clutch engagement.
Whether you’re restoring a classic 911 or maintaining a modern Porsche sports car, our clutch slave cylinders ensure reliability, precision, and the performance your vehicle deserves.
What Does a Clutch Slave Cylinder Do?
The clutch slave cylinder is the final link in the hydraulic clutch system, responsible for actuating the clutch release mechanism.
Core Functions:
- Converts hydraulic pressure from the master cylinder into clutch release movement.
- Allows gear engagement and disengagement with minimal pedal effort.
- Maintains proper hydraulic pressure throughout the clutch system.
- Ensures consistent pedal feel and smooth shifting performance.
- Works in sync with clutch master and release bearing components.
Without a properly functioning slave cylinder, clutch engagement becomes inconsistent, leading to stiff or spongy pedal feel and difficulty shifting gears.
Why Do Clutch Slave Cylinders Fail or Degrade?
Clutch slave cylinders operate under high hydraulic pressure and are exposed to heat, vibration, and clutch dust — all of which can cause wear and failure over time.
Common Causes of Failure Include:
- Internal seal wear causing fluid leaks.
- Air ingress into the hydraulic system.
- Corrosion from moisture-contaminated brake fluid.
- Cracked housing due to mechanical stress or age.
- Fluid contamination leading to seal deterioration.
When a slave cylinder fails, you may notice clutch fluid leaks, a soft or sinking pedal, or complete clutch disengagement failure.
Why Replace or Upgrade Your Porsche Clutch Slave Cylinder?
Replacing a worn or leaking clutch slave cylinder restores proper hydraulic performance, consistent clutch engagement, and pedal response.
Key Benefits:
- Restores smooth, responsive clutch operation.
- Prevents fluid leaks and loss of hydraulic pressure.
- Improves gear shift accuracy and driver control.
- Ensures long-lasting reliability and performance.
- Compatible with Porsche 911, Boxster, Cayman, and other models.
- Ideal for routine maintenance, clutch upgrades, or complete hydraulic rebuilds.
For optimal performance, it’s recommended to replace both the master and slave cylinders together to maintain system balance and pressure consistency.
Highlights
- Precision-engineered Porsche clutch slave cylinders.
- High-quality seals and durable construction for reliability.
- Consistent hydraulic pressure and pedal feel.
- Direct-fit replacements for modern and classic Porsche models.
- Resistant to heat, corrosion, and clutch fluid degradation.
- Perfect for maintenance, performance upgrades, or restorations.