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Brake Hose Pressure Valve. Porsche 964 C4 ❭ 92831521102
- Porsche 964 (911) C4 1989-93
Fits:
Porsche 964 C4 1989-94
Click 'Zoom in' for large parts diagram.
Diagram ref no 27
Price Shown is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92831521102
The product you are viewing cross references to these numbers
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 993 Turbo
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Related, superseded, cross reference or alternative numbers for comparison.
99311623752
The product you are viewing cross references to these numbers
- 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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135192712
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)
- 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
9m G50 Billet Uprated Clutch Slave Cylinder- Precision Engineering for Effortless Clutch Control
The 9m G50 Billet Uprated Clutch Slave Cylinder is a
premium, performance-focused upgrade designed to deliver superior clutch feel,
reduced weight, and unmatched reliability.
Precision CNC-machined from high-grade 7075 aluminium and hard-anodized
for durability, this component is built to exceed the performance of
standard equipment while retaining complete compatibility with your
G50-equipped Porsche transmission.
Fits:
Diagram ref no 1
Offering a 45% weight reduction compared to conventional cast components, it significantly improves pedal response and reduces fatigue — ideal for both street and track applications.
What It Does
The clutch slave cylinder converts hydraulic pressure from
the master cylinder into mechanical force to engage and disengage the clutch.
The 9m billet unit refines this process with enhanced precision and efficiency.
Key Functional Benefits:
- Precision
CNC Machining: Guarantees exact tolerances for optimal hydraulic
control and reliability.
- 7075
Aluminium Construction: Delivers exceptional strength-to-weight ratio
with 45% less mass than the original unit.
- Reduced
Pedal Effort: Provides a much lighter, smoother clutch feel,
enhancing drivability.
- Hard-Anodized
Finish: Resists corrosion, wear, and heat for extended service life.
- Direct Plug-and-Play Replacement: Simple installation with no modifications required.
This uprated billet slave cylinder ensures consistent clutch engagement, better modulation, and reliable operation under high-load or high-temperature driving conditions.
Why Clutch Slave Cylinders Fail
Standard clutch slave cylinders often fail due to design
limitations, wear, or environmental exposure. Common causes include:
- Seal
Deterioration: Over time, hydraulic seals degrade, leading to fluid
leaks and loss of pressure.
- Corrosion:
Moisture contamination or fluid neglect can corrode internal components.
- Heat
Fatigue: Repeated high-temperature cycles can cause warping or
cracking in cast materials.
- Contaminated
Fluid: Dirt or debris in the hydraulic system accelerates internal
wear.
- Material Fatigue: Cast or composite housings are prone to cracking under high clutch-pressure loads.
When failure occurs, symptoms typically include clutch pedal softness, inconsistent engagement, or complete loss of hydraulic function — all of which can compromise drivability and safety.
Why It Should Be Replaced or Upgraded
Upgrading to the 9m G50 Billet Clutch Slave Cylinder
provides lasting performance advantages over conventional units:
- Improved Reliability: 7075 aluminium construction
resists flexing, cracking, and corrosion.
- Lighter Pedal Effort: Redesigned internal geometry provides a smoother
and lighter clutch action.
- Enhanced Durability: Hard-anodized surface resists wear and
contamination.
- Precision Engineering: CNC machining ensures exact fitment and
consistent hydraulic pressure.
- Direct Fit: A plug-and-play solution requiring no modifications —
perfect for enthusiasts or professional installers.
- Performance Upgrade: Ideal for high-power builds or track-day cars where clutch precision is critical.
Replacing a worn clutch slave cylinder with this uprated billet design improves reliability, performance, and driving experience, ensuring flawless clutch operation for years to come.
Advantages at a Glance
- Precision CNC-machined from 7075 aluminium
- Hard-anodized for long-term corrosion resistance
- 45% lighter than standard cast designs
- Noticeably lighter, smoother pedal feel
- Complete plug-and-play compatibility
- Designed and engineered by 9m (Ninemeister)
- Perfect for both performance street and track vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M95011623712
The product you are viewing cross references to these numbers
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