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Porsche > 964 (911) (1989-1994) > 964 (911) C2 1989-93 > Brakes >

Brake Servo | Booster

Brake Servo | Booster

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DISPLAYING 1 to 9 (of 9 products)
Brake booster vacuum line. Porsche 964 Carrera 2 - 96435557103, 96435557101
4
Brake booster vacuum line. Porsche 964 Carrera 2
Special Order item
96435557103
Product Information
Product Information
Brake booster vacuum line. 

porsche

Fits:
Porsche 964 Carrera 2 1989-94

Click 'Zoom in' for large parts diagram.
Diagram ref no 40

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96435557103
96435557103
96435557101

The product you are viewing cross references to these numbers
Brake fluid DOT 4 20ltr Textar
1
Brake fluid DOT 4 20ltr Textar
95002500
Product Information
Product Information
Brake fluid DOT 4 20Ltr Textar


textar

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
Brake Fluid DOT 4 Brembo Premium Brake Fluid - 00004320209, 00004320366, 00004321082, 00004330552 - L04005, L04010, L04050
7
Brake Fluid DOT 4 Brembo Premium Brake Fluid
L040
Product Information
Product Information
Brake discs, calipers, pads and brake master cylinders are the four cardinal points of each brake system; however, they are likely to be useless without the core of the entire system, the brake fluid. This component is so neglected as to be generally controlled in a summary fashion, with topping instead of a more appropriate replacement, at the change frequency recommended by the manufacturer.
brembo


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.



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Related, superseded, cross reference or alternative numbers for comparison.

L040
00004320209
00004320366
00004321082
00004330552

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Brake fluid DOT 4 LV (Low Viscosity) Textar. - 00004330552, 00004320366, 00004321082, 00004320209
5
Brake fluid DOT 4 LV (Low Viscosity) Textar.
95006
Product Information
Product Information

Brake fluid DOT 4 LV (Low Viscosity) Textar.

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
00004330552
00004320366
00004321082
00004320209

The product you are viewing cross references to these numbers
Brake fluid dot 4 Textar - 00004430501, 00004321082, 00004330552, 00004320366, 00004320209
6
Brake fluid dot 4 Textar
95002
Product Information
Product Information
Brake fluid DOT 4 

textar

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
00004430501
00004321082
00004330552
00004320366
00004320209

The product you are viewing cross references to these numbers
Halo GT Advanced DOT 4 Racing Brake Fluid - 600ml - 00004320209, 00004320366, 00004321082, 00004330552 - L04005, L04010, L04050
1
Halo GT Advanced DOT 4 Racing Brake Fluid - 600ml
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
Related, superseded, cross reference or alternative numbers for comparison.

GTEUK198L2
00004320209
00004320366
00004321082
00004330552

The product you are viewing cross references to these numbers
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928 - 9991810225B, 99918102251, 99923901840, 99918102250, 91112570300
2
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928
Special Order item
9991810225B
Product Information
Product Information

Air Hose 12 x 3,7mm – Brake Servo & Inlet Manifold 
Sold by the metre

High-quality air hose designed for multiple Porsche applications, including brake servo (brake booster) systems and inlet manifold connections.

This hose is used on Porsche 911, 924, 928, 964 Carrera 2, and also within the inlet manifold system on 964 and 993 models. It plays a critical role in maintaining vacuum pressure for braking assistance and ensuring proper airflow within the intake system.

Fits:

  • 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 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 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86

Supplied per metre, this hose allows precise length replacement and flexible routing, making it ideal for maintenance, repair, or restoration of Porsche vacuum and intake systems. Manufactured to OEM specifications for durability and reliable performance.

Key Features

• Multi-purpose air hose for vacuum and intake systems
• Suitable for Porsche 911, 924, 928, 964, and 993
• Part number 9991810225B
• Used for brake servo and inlet manifold applications
• Sold per metre for custom lengths
• Resistant to heat and vacuum pressure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose serves critical roles across multiple systems.

It helps to:
• Deliver vacuum pressure to the brake servo (booster)
• Maintain effective braking assistance
• Support airflow within the inlet manifold system
• Ensure stable engine operation and efficiency
• Prevent vacuum leaks that affect performance

Why Replace Air / Vacuum Hoses

Over time, hoses degrade due to heat and pressure cycles.

Common issues include:
• Cracking or splitting
• Vacuum leaks reducing brake efficiency
• Hardening and reduced flexibility
• Poor engine performance due to air leaks

Replacing worn hoses restores braking performance and engine efficiency.



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

9991810225B
9991810225B
99918102251
99923901840
99918102250
91112570300

The product you are viewing cross references to these numbers
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928 - 9991810225B, 99918102251, 99923901840, 99918102250, 91112570300 - PSU12B
2
Hose 12 x 3,7mm Brake Servo Sold by the Metre. Porsche 911 / 964 / 993 / 924 / 928
9991810225B/1
Product Information
Product Information

Air Hose 12 x 3,7mm – Brake Servo & Inlet Manifold 
Sold by the metre

High-quality air hose designed for multiple Porsche applications, including brake servo (brake booster) systems and inlet manifold connections.

This hose is used on Porsche 911, 924, 928, 964 Carrera 2, and also within the inlet manifold system on 964 and 993 models. It plays a critical role in maintaining vacuum pressure for braking assistance and ensuring proper airflow within the intake system.

Fits:

  • 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 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 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86

Supplied per metre, this hose allows precise length replacement and flexible routing, making it ideal for maintenance, repair, or restoration of Porsche vacuum and intake systems. Manufactured to OEM specifications for durability and reliable performance.

Key Features

• Multi-purpose air hose for vacuum and intake systems
• Suitable for Porsche 911, 924, 928, 964, and 993
• Part number 9991810225B
• Used for brake servo and inlet manifold applications
• Sold per metre for custom lengths
• Resistant to heat and vacuum pressure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose serves critical roles across multiple systems.

It helps to:
• Deliver vacuum pressure to the brake servo (booster)
• Maintain effective braking assistance
• Support airflow within the inlet manifold system
• Ensure stable engine operation and efficiency
• Prevent vacuum leaks that affect performance

Why Replace Air / Vacuum Hoses

Over time, hoses degrade due to heat and pressure cycles.

Common issues include:
• Cracking or splitting
• Vacuum leaks reducing brake efficiency
• Hardening and reduced flexibility
• Poor engine performance due to air leaks

Replacing worn hoses restores braking performance and engine efficiency.



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

9991810225B
9991810225B
99918102251
99923901840
99918102250
91112570300

The product you are viewing cross references to these numbers
Repair set for brake booster and brake master cylinder. Porsche 964 C2 - PCG35518201
1
Repair set for brake booster and brake master cylinder. Porsche 964 C2
Special Order item
PCG35518201
Product Information
Product Information
Repair set for brake booster and brake master cylinder.
The kit is made for LHD Cars
(most parts can be used for RHD cars excluding the pipes)
porsche

Fits:
Porsche 964 (911) Carrera 2 (1990 - 1994)
Also for Targa and Speedster

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

PCG35518201
PCG35518201

The product you are viewing cross references to these numbers
DISPLAYING 1 to 9 (of 9 products)
Also found on these pages
About Brake Servo | Booster

Porsche Brake Servo / Booster | Design911 Precision Replacement Parts for Enhanced Braking Power & Control

The brake servo, also known as the brake booster, is a crucial component in your Porsche’s braking system. It uses engine vacuum or hydraulic pressure to amplify the force applied to the brake pedal, making braking smoother, more responsive, and less physically demanding. A properly functioning servo ensures effortless braking and preserves Porsche’s signature pedal feel. When it begins to fail, pedal pressure increases, and braking performance declines — making replacement essential for safety and comfort.

At Design911, we supply a wide range of brake servos and boosters, engineered for exact fitment and long-term reliability. Each unit is manufactured using premium materials and advanced sealing technology to deliver consistent vacuum assistance and hydraulic integrity. Whether for road use, restoration, or performance upgrades, our brake servos ensure the precision braking your Porsche deserves.

What Does a Brake Servo / Booster Do?

The brake servo multiplies the force from the brake pedal before transmitting it to the master cylinder, reducing the effort required to slow the vehicle.

Core Functions:
• Amplifies pedal force for enhanced braking efficiency.
• Provides smooth and responsive brake pedal feel.
• Supports consistent braking performance across varying speeds.
• Helps maintain driver comfort and control during deceleration.
• Works in conjunction with ABS and stability systems for balance and safety.

An efficient servo system ensures your Porsche brakes with the precision, strength, and responsiveness it was engineered for.

Why Do Brake Servos / Boosters Fail or Degrade?

Over time, servos are exposed to vacuum pressure, moisture, and mechanical wear that can affect their internal seals, diaphragm, or valves.

Common Causes of Failure Include:
• Vacuum leaks caused by worn or cracked diaphragms.
• Corrosion or moisture ingress affecting internal components.
• Broken check valves or damaged seals.
• Reduced vacuum supply due to engine issues.
• Age-related wear in the booster mechanism.

When the servo fails, drivers may experience a hard brake pedal, increased stopping distance, or inconsistent braking assistance — compromising safety and performance.

Why Replace or Upgrade Your Porsche Brake Servo / Booster?

Replacing a failing or inefficient brake servo restores correct braking assistance and ensures safe, predictable braking response. Design911’s precision-engineered servos are designed for durability, direct fitment, and compatibility across Porsche models.

Key Benefits:
• Restores proper brake assistance and pedal feel.
• Improves braking comfort and control.
• Constructed with corrosion-resistant materials for longevity.
• Engineered for consistent vacuum and hydraulic performance.
• Direct-fit design ensures easy installation.
• Suitable for classic and modern Porsche vehicles.

Design911’s Porsche brake servos and boosters deliver the confidence and reliability required for every driving situation — from city traffic to high-speed performance.

Highlights

• Premium Porsche brake servos and boosters.
• Precision-engineered for hydraulic and vacuum efficiency.
• Restores effortless braking power and smooth pedal response.
• Corrosion-resistant construction for long service life.
• Ideal for performance, restoration, or maintenance applications.
• Compatible with a wide range of Porsche models.

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