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Porsche Cayenne 9YA.2 (E3 II) 2023>> 9YA.2 Cayenne S Coupe V8 4.0L (474Hp) 2023>> Brakes Brake Servo | Booster

Brake vacuum booster. Porsche 911 / 911S / Carrera 3.0 / 930 Turbo  ›  91135502700

Brake vacuum booster. Porsche 911 / 911S / Carrera 3.0 / 930 Turbo - 91135502700 - PS8988G, 1661800100
3
Check vehicle fitment
91135502700/1
Product Information
Product Information

OE Match vacuum brake servo for selected Porsche 911, 911S, Carrera 3.0 and 930 Turbo applications. The unit has a diaphragm diameter of 194mm.

Fits

  • Porsche 911/911S 1974-77
  • Porsche 911 Carrera 3.0 1974-77
  • Porsche 911 Turbo 1977>>

Check fitment for your specific vehicle (model, year, engine) before ordering

Diagram ref no 2

What This Product Does

The servo uses vacuum assistance to increase the force transmitted from the pedal to the brake master cylinder. This reduces the physical effort needed to operate the hydraulic braking system.

Functions

  • Assists the driver's pedal input using vacuum.
  • Transfers assisted operating force to the master cylinder.
  • Reduces the pedal effort required during braking.

Technical Details

  • Brand: OE Match.
  • Supplied part reference: 91135502700.
  • Operating type: vacuum-assisted brake servo.
  • Diaphragm diameter: 194mm.
  • Assembly references: 911/911S / CARRERA 3.0 and 911 TURBO with brake booster.

Symptoms of Fault

A firm pedal requiring unusual effort, audible hissing or reduced assistance can warrant investigation. Excessive pedal movement or weak braking also needs diagnosis, as these symptoms do not establish that the servo itself has failed.

Why Replacement Matters

Renewal may be appropriate when a confirmed booster fault reduces assistance or allows vacuum leakage. Check the vacuum supply, hoses, connections and related components before replacing the unit; faults elsewhere can affect pedal behaviour too. Brake-system diagnosis and installation should be undertaken by a competent technician.

FAQs

Is a check valve included?
The supplied information does not confirm package contents. Verify whether the valve, seals and fitting hardware are required separately.

Is it specific to a driving side?

No left- or right-hand-drive specification is supplied. Match the original reference and installation arrangement before selecting the part.



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91135502700
91135502700

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Brake Fluid DOT 4 Brembo Premium Brake Fluid - 00004320209, 00004320366, 00004321082, 00004330552 - L04005, L04010, L04050
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Brake Fluid DOT 4 Brembo Premium Brake Fluid
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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.


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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Brake fluid dot 4 Textar - 00004430501, 00004321082, 00004330552, 00004320366, 00004320209
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Brake fluid dot 4 Textar
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Brake fluid DOT 4 

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

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

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95006
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00004320366
00004321082
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Brake fluid DOT 4 20ltr Textar
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Brake fluid DOT 4 20Ltr 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
PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.