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- Porsche 964 (911) C2 1989-93
Brake Master Cylinder
Restore the braking performance and safety of your Porsche
with this OE Match Brake Master Cylinder. Manufactured to
original equipment specifications, this premium-quality replacement master
cylinder delivers precise hydraulic pressure, consistent brake pedal feel and
dependable braking performance for everyday driving and spirited road use.
Fits:
- Porsche 964 (911) C2 1989-93
Diagram ref no 9
The brake master cylinder is the heart of the hydraulic braking system. Every time you press the brake pedal, it converts mechanical force into hydraulic pressure, distributing brake fluid to each brake caliper. A worn or failing master cylinder can reduce braking efficiency, increase stopping distances and compromise vehicle safety, making timely replacement essential.
Manufactured using precision-machined internal components and high-quality seals, this OE Match brake master cylinder is engineered for long service life, excellent reliability and direct replacement fitment.
What Does the Brake Master Cylinder Do?
The brake master cylinder generates and distributes hydraulic pressure throughout the braking system.
Its primary functions include:
- Converting brake pedal movement into hydraulic pressure.
- Delivering brake fluid evenly to all four brake calipers.
- Maintaining consistent brake pedal feel.
- Providing balanced braking performance.
- Supporting the operation of the ABS braking system.
- Ensuring safe and predictable stopping performance.
Without a correctly functioning master cylinder, the braking system cannot operate effectively.
Why Does the Brake Master Cylinder Fail?
Over time, the internal components are subjected to constant
hydraulic pressure and brake fluid exposure. Common causes of failure include:
- Wear of the internal piston seals.
- Contaminated or degraded brake fluid.
- Corrosion inside the cylinder bore.
- Moisture absorption in the brake fluid.
- High mileage and age-related wear.
- Damage caused by neglected brake fluid changes.
Regular brake fluid replacement helps prolong the life of the master cylinder and the entire braking system.
Symptoms of a Failing Brake Master Cylinder
Typical warning signs include:
- Soft or spongy brake pedal.
- Brake pedal slowly sinking under constant pressure.
- Reduced braking performance.
- Internal hydraulic pressure loss.
- Brake fluid leaks around the master cylinder.
- Inconsistent pedal feel.
- Increased stopping distances.
- Brake warning light illumination (in some cases).
If any of these symptoms are present, the master cylinder should be inspected and replaced immediately if found to be faulty.
When Should the Brake Master Cylinder Be Replaced?
Replacement is recommended when:
- Internal seals begin to fail.
- Hydraulic pressure cannot be maintained.
- Brake fluid leakage is detected.
- The cylinder bore becomes corroded.
- Carrying out a complete brake system restoration.
- Replacing ageing hydraulic braking components.
- Brake performance deteriorates despite correctly functioning calipers and hoses.
Replacing the master cylinder restores braking confidence and helps maintain the original performance of your Porsche.
Please note if the fitting instructions are not followed this will damage the unit.
For Installation Instructions please CLICK HERE
Related reference numbers
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96435501503
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DOT 4
Having an extremely high boiling point and lower viscosity than required, it meets and greatly exceeds regulatory standards. Also suitable for vehicles with ABS.
Vapour Lock formation
This sort of habit leaves room for the Vapour Lock, the formation of vapour bubbles due to boiling of the brake fluid that replace the normal fluid and are compressed, thereby sending the brake pedal to its fill stoke (spongy pedal). The origin is incident in the porosity of the tubes that make up the braking circuit, which in time draw moisture into the fluid, drastically reducing the boiling point. The result is a reduced braking efficiency.
Brembo Premium Brake Fluid
Brembo Premium brake fluids have a higher boiling point that exceeds the standard, thus offering superior resistance to the Vapour Lock and ensuring braking efficiency even at low temperatures. With high anti-corrosion properties and resistance to oxidation, Brembo brake fluid also allows for long-term unaltered chemical/physical characteristics of the fluid in operating circuit; therefore, preserving its integrity.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
L040
The product you are viewing cross references to these numbers
Brake fluid is one of the most important fluids in a car as without it, stopping the vehicle safely would be impossible. The Brake fluid transmits the force exerted by the driver on the brake pedal onto the wheel brake.
To ensure perfect operation of the brakes, the brake fluid must be changed regularly during inspection or maintenance and tested with the correct brake fluid tester.
Brake fluid should be changed every two years.
The higher the DOT class, the higher the boiling temperature and wet boiling point. Higher DOT classes tend to allow longer maintenance intervals. The DOT standards are based on the American FMVSS-116 standard of the Department of Transportation (DOT).
Boiling Point and Viscosity
Dry Boiling Point - describes the property of the sealed new brake fluid. In this state, the brake fluid is almost anhydrous (substance containing no water). The dry boiling point is usually between 240 and 280°C.
Wet Boiling Point - determines the property of the brake fluid at the end of its life cycle, at a water content of 3.5% the fluid should be replaced. This defined wet boiling point must not be undercut.
Viscosity - describes the flow rate of the brake fluid. The lower the viscosity, the faster the brake fluid flows through the brake system, and the faster the brake signals are transmitted.
Important Notes
• Brake fluid is poisonous and a hazardous waste.
• Be careful when changing. The fluid weakens paints and plastics.
• It must not come into contact with eyes or skin. Always rinse spilled liquid with water.
• Do not pour the liquid into drinking water or mix with used oil.
• The colour of the brake fluid reveals nothing about its quality.
• Brake fluid should be stored in its original packaging and in a dry, cool and well-ventilated place.
Find out about Textar product verification here
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95002
The product you are viewing cross references to these numbers
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Brake fluid DOT 4 LV (Low Viscosity) Textar.
Textar DOT 4 LV (Low Viscosity) is especially recommended for use in hydraulic brake and clutch systems of vehicles fitted with ESP, ABS and ASR with a high boiling point and outstanding performance at very low temperatures.
DOT 4 LV (Low Viscosity)
Dry Boiling Point ≥ 260° C
Wet Boiling Point ≥ 165° C
Viscosity at -40C < 750 mm2 /s
Brake fluid is one of the most important fluids in a car as without it, stopping the vehicle safely would be impossible. The Brake fluid transmits the force exerted by the driver on the brake pedal onto the wheel brake.
To ensure perfect operation of the brakes, the brake fluid must be changed regularly during inspection or maintenance and tested with the correct brake fluid tester.
Brake fluid should be changed every two years.
The higher the DOT class, the higher the boiling temperature and wet boiling point. Higher DOT classes tend to allow longer maintenance intervals. The DOT standards are based on the American FMVSS-116 standard of the Department of Transportation (DOT).
Boiling Point and Viscosity
Dry Boiling Point - describes the property of the sealed new brake fluid. In this state, the brake fluid is almost anhydrous (substance containing no water). The dry boiling point is usually between 240 and 280°C.
Wet Boiling Point - determines the property of the brake fluid at the end of its life cycle, at a water content of 3.5% the fluid should be replaced. This defined wet boiling point must not be undercut. <
Viscosity - describes the flow rate of the brake fluid. The lower the viscosity, the faster the brake fluid flows through the brake system, and the faster the brake signals are transmitted.
Important Notes
• Brake fluid is poisonous and a hazardous waste.
• Be careful when changing. The fluid weakens paints and plastics.
• It must not come into contact with eyes or skin. Always rinse spilled liquid with water.
• Do not pour the liquid into drinking water or mix with used oil.
• The colour of the brake fluid reveals nothing about its quality.
• Brake fluid should be stored in its original packaging and in a dry, cool and well-ventilated place.
Find out about Textar product verification here
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95006
The product you are viewing cross references to these numbers