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- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
The Porsche Brake Fluid Reservoir is a genuine replacement reservoir designed for Porsche Cayenne 955 and 957 models from 2003–2010.
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Diagram Ref No 1
Mounted as part of the brake master cylinder assembly, the reservoir stores the brake fluid required by the vehicle's hydraulic braking system and provides a continuous supply of fluid to the master cylinder.
Manufactured to Porsche specifications, it is designed to restore the correct fit, fluid capacity and sealing arrangement when the original reservoir has become cracked, brittle, damaged or contaminated.
What This Product Does:
The brake fluid reservoir holds the hydraulic fluid used to operate the vehicle's braking system.
When the brake pedal is pressed, the master cylinder uses this fluid to generate hydraulic pressure, which is transmitted through the brake lines to the brake calipers.
The reservoir's main functions include:
- Storing the vehicle's brake fluid
- Supplying fluid continuously to the brake master cylinder
- Helping maintain the correct fluid level within the braking system
- Compensating for normal fluid-level changes as brake pads wear
- Providing a sealed container that helps protect brake fluid from contamination
- Supporting reliable hydraulic braking operation
- Allowing the brake fluid level to be visually inspected during servicing
The reservoir itself does not generate braking pressure, but an adequate and uncontaminated fluid supply is essential for the master cylinder and complete hydraulic brake system to work correctly.
Symptoms Of Wear Or Failure:
Brake fluid reservoirs are normally durable, but age, engine-bay heat, vibration and prolonged exposure to brake fluid can cause the plastic to deteriorate.
Common signs that replacement may be required include:
- Visible cracks or splits in the reservoir
- Brake fluid leaking around the reservoir body
- Fluid leakage around the master cylinder connection
- Reservoir plastic becoming brittle or distorted
- Heavy discolouration making the fluid level difficult to see
- Damaged mounting points
- Persistent reduction in brake fluid level
- Moisture or contamination visible inside the reservoir
- Damage around the cap or sealing area
- Brake warning light caused by a low fluid level
- Fluid traces around the reservoir or surrounding components
- Reservoir damage discovered during master cylinder replacement
A falling brake fluid level can also indicate leaks elsewhere in the braking system, so the complete hydraulic system should be inspected before assuming that the reservoir alone is responsible.
Why Replacement Matters:
The braking system relies on a secure and uninterrupted supply of brake fluid.
If the reservoir cracks or begins to leak, the brake fluid level can fall and air may eventually enter the hydraulic circuit. Air in the braking system can result in a soft or spongy pedal and reduced braking effectiveness.
Brake fluid is also hygroscopic, meaning it absorbs moisture. A damaged reservoir or poor seal can allow contamination to enter the fluid, reducing its performance and potentially contributing to corrosion inside hydraulic components.
Replacing a damaged reservoir helps restore:
- A secure brake fluid supply
- Correct hydraulic system operation
- Reliable fluid-level monitoring
- Protection against leaks and contamination
- Consistent brake pedal response
- Correct operation of the master cylinder and braking system
Because the braking system is safety-critical, any reservoir showing cracks, leakage or significant deterioration should be replaced promptly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95535511300
The product you are viewing cross references to these numbers
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
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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