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Brake Master Cylinder

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DISPLAYING 17 to 32 (of 33 products)
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90135564400/1
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Brake master cylinder reservoir feeder line.
This pipe fits into the top of the master cylinder and allows a rubber hose to connect from the reservoir down to the master cylinder. 

Fits:
Porsche 911 / 912 1965 - 1967
Porsche 911 1968 - 1977 *RHD cars only
Porsche 930 Turbo 1975 - 1977 *RHD cars only

Fits to number 11 on diagram.

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90135564400
90135564400

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91135501202
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Brake master cylinder.

For cars with stop light switch

porsche

Fits:
Porsche 911 1968-76
Porsche 930 Turbo 3.0L 1975/77
Porsche 912 1968-69, 1976
Porsche 914-6 1970-71

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Related, superseded, cross reference or alternative numbers for comparison.

91135501202
91135501202
1661100200
90135501202
91135501201

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91135501202/2
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Product Information
Brake master cylinder. Standard 19mm bore
For cars with stop light switch
Does not come with new switch. Has to be transferred over or bought separately. Part number 90161311500

Fits:
Porsche 911 1968-76
Porsche 930 Turbo 3.0L 1975/77
Porsche 912 1968-69, 1976
Porsche 914-6 1970-71

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Related, superseded, cross reference or alternative numbers for comparison.

91135501202
91135501202
90135501202
91135501201

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90135501200/1
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Product Information
Brake master cylinder.
For cars without stop light switch
Bore size: 19.05mm

Fits:
Porsche 911 T/E/S 2.2L / 2.4L / 2.7L 1968-73
Porsche 911 2.7L 1974-77 Cars without brake servo
Porsche 914 (914-6 type)

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Related, superseded, cross reference or alternative numbers for comparison.

90135501200
90135501200
03.2119-2301.3

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90135501200/2
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Product Information
Brake Master Cylinder.
For cars without stop light switch
Bore size: 19.05mm


Fits:
Porsche 911 T/E/S 2.2L / 2.4L / 2.7L 1969-75
Porsche 914 (914-6 type)



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90135501200
90135501200
9220075

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90142305704/1
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Brake piston rod master cylinder.  Length - 95.2mm
A steel push rod that transmits force from the brake pedal to the master cylinder piston. This component ensures proper brake pedal feel, correct stroke length and consistent hydraulic operation across the system.

Fits:
Porsche 911 2.0L 1968 -1969
Porsche 9111970 -1977
Porsche 914 1.7L / 1.8L / 2.0L 1970 - 1976

Diagram ref no 44

Built to exact dimensions for classic Porsche 911, 912 and 914 models, this critical component ensures correct stroke and reliable braking performance.

Over time, the brake master cylinder push rod can wear, bend slightly or lose its proper length due to pedal geometry changes, overload, or age. A compromised rod may lead to incorrect master cylinder travel, spongy brake pedal feel, or inconsistent braking performance.

Replacing this rod restores the intended geometry and ensures the master cylinder receives proper input - maintaining safety and brake system reliability.

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90142305704
90142305704

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90161311501
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Brake pressure warning switch.
2 Pole / Prong.
On master cylinder.

porsche

Fits:
for LHD cars
Porsche 911 1968-76
Porsche 930 Turbo 3.0L 1975/77
Porsche 912 1968-69, 1976
Porsche 914-6 1970-71

Click 'Zoom in' for large parts diagram.
Diagram ref no 44

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90161311501
90161311501
90161311500
91135501202
90135501202
91135501201

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90161311501/1
Product Information
Product Information
Brake pressure warning switch.
2 Pole / Prong.
On master cylinder.

oematch

Fits:
for LHD cars
Porsche 911 1968-76
Porsche 930 Turbo 3.0L 1975/77
Porsche 912 1968-69, 1976
Porsche 914-6 1970-71

Click 'Zoom in' for large parts diagram.
Diagram ref no 44

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90161311501
90161311501
90161311500
91135501202
90135501202
91135501201

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15EC7F
Product Information
Product Information

Molub-Alloy Paste White T – High Performance Assembly & Anti-Fretting Paste

Molub-Alloy Paste White T is a premium high-performance assembly paste designed to provide exceptional protection against fretting corrosion, stick-slip, wear, and seizure in demanding automotive, industrial, and workshop applications.

This white assembly paste applies cleanly and appears almost colourless when spread as a thin layer, making it ideal for precision assembly work where cleanliness and protection are equally important.

Formulated for universal assembly and thin-film lubrication applications, Molub-Alloy Paste White T helps simplify component assembly and future disassembly while protecting contact surfaces against corrosion, vibration-related wear, and moisture ingress.

Its advanced formulation provides excellent resistance to both hot and cold water while delivering long-lasting corrosion protection under harsh operating conditions.

Particularly effective in applications exposed to vibration and frictional movement, the paste helps prevent fretting corrosion and reduces stick-slip behaviour, making it ideal for hydraulic cylinders, open lubrication points, threaded assemblies, sliding surfaces, and mechanical components subject to oscillating movement.

The product also helps eliminate squeaking noises and improves smooth operation in moving assemblies exposed to high loads and thermal stress.

Suitable for temperatures ranging from -30°C to +250°C, Molub-Alloy Paste White T delivers reliable lubrication and anti-corrosion performance across a wide range of workshop, automotive, and engineering environments.

Key Features

• High-performance white assembly paste
• Prevents fretting corrosion and surface wear
• Clean application with almost colourless thin-film appearance
• Helps simplify assembly and future disassembly
• Excellent anti-seize and separating properties
• Resistant to hot and cold water
• Reduces stick-slip and frictional vibration
• Helps eliminate squeaking noises
• Provides long-lasting corrosion protection
• Suitable for hydraulic cylinders and moving assemblies
• Wide operating temperature range from -30°C to +250°C
• Suitable for automotive, engineering, and industrial applications

Applications

Molub-Alloy Paste White T is ideal for:

• Assembly lubrication
• Anti-fretting protection
• Threaded fasteners and fittings
• Hydraulic cylinders
• Sliding and contact surfaces
• Open lubrication points
• Components exposed to vibration
• Mechanical assemblies requiring anti-seize protection
• Automotive workshop applications
• Industrial machinery and engineering assemblies

Why Use Molub-Alloy Paste White T?

Mechanical components exposed to vibration, friction, heat, and moisture can suffer from fretting corrosion, seizure, stick-slip, and accelerated wear.

Molub-Alloy Paste White T helps protect components by:
• Reducing friction between contact surfaces
• Preventing corrosion and seizure
• Improving assembly and removal
• Minimising vibration-induced wear
• Protecting against moisture and contamination

This makes it ideal for long-term component protection and reliable assembly work.

Temperature Performance

Designed for demanding operating conditions, Molub-Alloy Paste White T remains effective across a wide temperature range:

• Operating temperature: -30°C to +250°C
• Suitable for hot and cold operating environments
• Maintains lubrication and protection under thermal load

Clean & Professional Assembly Solution

Unlike darker anti-seize compounds, this white assembly paste offers a cleaner, more professional appearance during application and servicing.

Benefits include:
• Cleaner working environment
• Reduced visible residue
• Easier inspection during assembly
• Professional workshop finish

Special Order item
PCG35506100
Product Information
Product Information
Connecting line for brake master cylinder, front.
For cars without brake servo

Fits:
For Left Hand Drive Cars (LHD)
Porsche 911 2.0-3.0 08/67-12/77
Porsche 911 turbo 1975-77
Porsche 912 1.6 08/67-02/70
Porsche 914 1.7-2.0 01/69-02/76

Diagram ref no 11

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PCG35506100
PCG35506100
1661250300
90135506100

The product you are viewing cross references to these numbers
PCG35506100/1
Product Information
Product Information
Connecting line for brake master cylinder, front.
For cars without brake servo

Fits:
For Left Hand Drive cars (LHD)
Porsche 911 2.0-3.0 08/67-12/77
Porsche 911 turbo 3.0 1975-77
Porsche 912 1.6 08/67-02/70
Porsche 914 1.7-2.0 01/69-02/76

Diagram ref no 11

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PCG35506100
PCG35506100
90135506100

The product you are viewing cross references to these numbers
Special Order item
PCG35506300
Product Information
Product Information
Connecting line for brake master cylinder, rear.
For cars without brake servo

Fits:
For Left Hand Drive Cars (LHD)
Porsche 911 2.0-3.0 08/67-12/77
Porsche 911 turbo 3.0 1975-77
Porsche 912 1.6 08/67-02/70
Porsche 914 1.7-2.0 01/69-02/76

Diagram ref no 12

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Related, superseded, cross reference or alternative numbers for comparison.

PCG35506300
PCG35506300
1661250400
90135506300
91435506300
PCG35506300
PCG35506310

The product you are viewing cross references to these numbers
PCG35506300/1
Product Information
Product Information
Connecting line for brake master cylinder, rear.
For cars without brake servo


Fits:
For Left Hand Drive Cars (LHD)
Porsche 911 2.0-3.0 08/67-12/77
Porsche 911 turbo 3.0 1975-77
Porsche 912 1.6 08/67-02/70
Porsche 914 1.7-2.0 01/69-02/76

Diagram ref no 12



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Related, superseded, cross reference or alternative numbers for comparison.

PCG35506300
PCG35506300
90135506300
91435506300
PCG35506300
PCG35506310

The product you are viewing cross references to these numbers
GTEUK198L2
Product Information
Product Information
Halo GT Advanced DOT 4 Racing Brake Fluid
600ml aluminium bottle

Halo GT is the latest formulation with a DOT 4 base suitable for the demands of motorsport (such as low compressibility and low viscosity). It has a dry boiling point of 336 degrees Celsius which is higher than the Brembo HT64. Whilst withstanding the demands of motorsport, Halo GT is suitable for track day use.

Brake Later. Release Faster. Accelerate earlier. Every Lap.

Halo GT is the ultimate DOT 4 racing brake fluid, fully compliant and optimized for the latest racing ABS systems. Engineered for ultra-fast response, thermal stability, and consistent pedal feel under the most demanding race conditions.

FEATURES

01 | Derived from P1 Proven under extreme conditions. Built on Halo P1 chemistry, developed for the highest demands of motorsport.

02 | Designed for GT racing The ultimate in DOT 4 racing brake fluid, fully compliant and optimized for use with the latest racing ABS systems.

03 | Ultra low viscosity Faster system response for immediate feedback and precise control.

04 | Fade Resistant Technology™ Performance that lasts. Maintains consistent pedal feel under repeated heat cycles with minimal fade as temperatures rise.

05 | Corner focused Control where it matters most. Optimised for braking zones, release precision, and clean transition back to throttle.


Performance benefits


Sharper response. Better control. Faster exits from start to finish.
•  Faster hydraulic response under load
•  Greater stability through repeated braking cycles
•  Quicker piston release for reduced drag
•  More precise brake modulation
•  Reduced thermal stress in extreme conditions
  Earlier throttle application on corner exit

Speed of Response.
Speed on Track. Modern Braking Systems demand instant response. Halo GT’s ultra-low viscosity allows the brake system to respond faster, improving communication between driver and car.
Faster pressure build-up. Cleaner release. Greater control at the limit.
Brake later. Release faster. Accelerate earlier.

Most races are won in the corner.
Anyone can be fast on the straight. But cornering takes skill. Performance is defined under braking, through release, and on exit. Halo GT is engineered for these moments. Giving drivers the confidence to brake faster, carry speed through the corner, and accelerate earlier. And continue to do that consistently, lap after lap.

For GT drivers who understand Performance.
Not for Everyone. Built for those who demand more.
Also suitable for Semi-Pro, Club Racing and Trackday performance drivers.

Technical Specification.

  336°C dry boiling point
  Ultra-low viscosity of 1350 cSt

Designed to maintain consistent performance under heat and repeated load, with full data available for detailed evaluation.



Related reference numbers
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GTEUK198L2
00004320209
00004320366
00004321082
00004330552

The product you are viewing cross references to these numbers
Special Order item
90135592901
Product Information
Product Information
Master cylinder grommet.

porsche

Fits:
Porsche 911 1965-77
Porsche 911 (930) Turbo 1975-77
Porsche 912 1968-69
Porsche 912 1976
Porsche 914 1970-76

Price is for each.


Click 'Zoom in' for large parts diagram.
Diagram ref no 19

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90135592901
90135592900
90135592901

The product you are viewing cross references to these numbers
90135592901/1
Product Information
Product Information
Master cylinder grommet.

oematch

Fits:
Porsche 911 1965-77
Porsche 911 (930) Turbo 1975-77
Porsche 912 1968-69
Porsche 912 1976
Porsche 914 1970-76

Price is for each.


Click 'Zoom in' for large parts diagram.
Diagram ref no 19

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Related, superseded, cross reference or alternative numbers for comparison.

90135592901
90135592900
90135592901

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DISPLAYING 17 to 32 (of 33 products)
1 2 3
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About Brake Master Cylinder

Porsche Brake Master Cylinders | Design911 Precision Replacement Parts for Hydraulic Performance & Safety

The brake master cylinder is the heart of your Porsche’s braking system, converting pedal pressure into hydraulic force that engages the brake calipers. It ensures consistent, balanced braking across all wheels — a key factor in maintaining Porsche’s renowned control and stopping performance. When the master cylinder begins to fail, it can cause pressure loss, spongy pedals, or brake fade, making timely replacement essential for safety and precision.

At Design911, we stock a complete range of brake master cylinders, expertly engineered for exact fitment, consistent pressure delivery, and long-term durability. Each unit is crafted from high-quality materials to withstand intense hydraulic pressures and thermal cycling. Whether for road use, motorsport preparation, or classic restoration, our replacement master cylinders restore the precision and performance your Porsche was built to deliver.

What Does a Brake Master Cylinder Do?

The master cylinder plays a critical role in the hydraulic braking system, converting the mechanical pressure from your foot into fluid pressure distributed to each caliper.

Core Functions:
• Converts pedal movement into hydraulic pressure.
• Ensures even brake force distribution across all wheels.
• Maintains consistent pedal feel and braking response.
• Supports ABS and traction control systems.
• Provides safe, reliable braking performance in all conditions.

Without a properly functioning master cylinder, your Porsche’s braking system cannot maintain hydraulic balance or stopping efficiency.

Why Do Brake Master Cylinders Fail or Degrade?

Brake master cylinders endure constant hydraulic pressure and exposure to brake fluid — conditions that can lead to internal wear, leaks, or contamination over time.

Common Causes of Failure Include:
• Worn internal seals leading to pressure loss or leaks.
• Corrosion caused by moisture-contaminated brake fluid.
• Scored or pitted cylinder bores reducing seal integrity.
• Air ingress into the hydraulic system.
• Age-related degradation of rubber components.

When a master cylinder fails, it can cause reduced braking efficiency, fluid leaks, or an unresponsive pedal — all of which compromise safety and control.

Why Replace or Upgrade Your Porsche Brake Master Cylinder?

Replacing a worn or leaking master cylinder restores full hydraulic pressure and ensures reliable braking response. Design911’s precision-engineered master cylinders deliver performance and durability that meet or exceed Porsche standards.

Key Benefits:
• Restores safe and consistent braking performance.
• Prevents fluid leaks and loss of hydraulic pressure.
• Maintains proper brake balance across all wheels.
• Constructed from corrosion-resistant materials for longevity.
• Direct-fit replacements for easy installation.
• Suitable for classic and modern Porsche models.

Design911’s Porsche brake master cylinders offer exceptional reliability and performance — ensuring your Porsche stops with the same confidence and precision as it accelerates.

Highlights

• Premium Porsche brake master cylinders for performance and restoration.
• Precision-machined for superior hydraulic control.
• Resistant to corrosion, heat, and fluid breakdown.
• Ensures firm pedal feel and consistent braking response.
• Compatible with both road and track applications.
• Designed for easy installation and long service life.

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