Clutch Master Cylinder
Fits:
Porsche 911 1978-89
Porsche 928 1987-86 (RHD cars ONLY)
Porsche 968 1992-95
Porsche 924 1980-85
Porsche 924S 1986-88
Porsche 944 1982-90
Click 'zoom in' for large parts diagram.
Diagram ref no 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
191611933F
The product you are viewing cross references to these numbers
- 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 1978-1989 3.3L Turbo (930)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
LHD Cars
Porsche 911 1987>> Carrera & Turbo
Click 'Zoom in' for the large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142319700
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 1987-89
Porsche 930 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142317103
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 1987-89
Porsche 930 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142317103
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 1987-89
Porsche 930 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142317103
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 1987-89
Click 'Zoom in' for large parts diagram.
Diagram ref no. 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142317706
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 911 1987-89
Click 'Zoom in' for large parts diagram.
Diagram ref no. 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142317706
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
Shop Securely
12 Month Warranty
Worldwide Delivery
Porsche Clutch Master Cylinders | Hydraulic Precision for Smooth Gear Engagement
The clutch master cylinder is a key component of your Porsche’s hydraulic clutch system. It converts pedal pressure into hydraulic force, sending fluid to the slave cylinder to engage or disengage the clutch. A properly functioning clutch master cylinder ensures smooth gear shifts, precise pedal feel, and reliable performance in every driving condition.
At Design911, we supply premium clutch master cylinders engineered to meet or exceed original performance standards. Built using high-grade materials and precision internal seals, each unit delivers consistent hydraulic pressure, long-term durability, and excellent pedal response.
Whether you’re restoring a classic Porsche or maintaining a modern model, our clutch master cylinders guarantee the performance, precision, and reliability your drivetrain demands.
What Does a Clutch Master Cylinder Do?
The clutch master cylinder forms the first stage of your Porsche’s hydraulic clutch system, transmitting driver input into fluid pressure for gear engagement.
Core Functions:
- Converts pedal movement into hydraulic pressure.
- Delivers fluid to the clutch slave cylinder for smooth disengagement.
- Ensures accurate clutch engagement for seamless gear shifts.
- Maintains pedal feel and consistent hydraulic response.
- Supports high-performance driving with precise modulation.
Without a fully functioning master cylinder, the clutch cannot disengage properly, leading to difficulty selecting gears or complete transmission failure.
Why Do Clutch Master Cylinders Fail or Wear Out?
Over time, hydraulic components experience wear from pressure cycles, fluid contamination, and heat exposure — eventually reducing clutch performance.
Common Causes of Failure Include:
- Internal seal wear or leakage.
- Corrosion from moisture in hydraulic fluid.
- Air ingress into the hydraulic system.
- Damaged piston or bore from debris or age.
- Fluid contamination reducing hydraulic efficiency.
When the master cylinder begins to fail, symptoms may include a soft or sinking clutch pedal, fluid leaks near the pedal, or difficulty shifting gears.
Why Replace Your Porsche Clutch Master Cylinder?
Replacing a worn or leaking clutch master cylinder restores precise pedal pressure, smooth gear changes, and long-term hydraulic reliability.
Key Benefits:
- Restores responsive clutch operation and pedal feel.
- Prevents clutch drag, slippage, or missed gear shifts.
- Ensures stable hydraulic pressure across the system.
- Reduces risk of air or fluid leaks in the clutch circuit.
- Compatible with Porsche 911, Cayman, Boxster, Panamera, Macan, and classic models.
- Ideal for daily driving, restorations, and motorsport applications.
For best performance, always replace clutch fluid and inspect the slave cylinder when fitting a new master cylinder.
Highlights
- Precision-engineered Porsche clutch master cylinders.
- Corrosion-resistant construction for long service life.
- Consistent hydraulic performance under pressure.
- Direct-fit replacement for Porsche clutch systems.
- Designed for reliability, responsiveness, and smooth shifting.
- Suitable for restoration, maintenance, or performance use.
