If you own a Porsche and need to replace the brake fluid, you may have come across part number 00004320366. This is the official OEM brake fluid used by Porsche in many of its models. Using the correct fluid is critical for proper brake system performance and safety. This guide explains everything you need to know about this specific brake fluid, including its specifications, which vehicles it fits, and how to handle a fluid change.
What Is Porsche Brake Fluid Part Number 00004320366?
Porsche part number 00004320366 refers to a high-performance DOT 4 brake fluid manufactured to strict OEM standards. This fluid is often labeled as Porsche Brake Fluid DOT 4 and is produced by reputable brands like Pentosin (Pentosin DOT 4 LV) or Castrol under contract. It is designed to meet the demanding requirements of Porsche braking systems, including ABS and stability control.
Key Specifications
- Type: DOT 4 (Low Viscosity)
- Dry Boiling Point: Typically > 265°C (500°F)
- Wet Boiling Point: Typically > 170°C (338°F)
- Viscosity: Low viscosity for modern systems
- Color: Clear to light yellow
The fluid is specifically formulated for Porsches, but it is also compatible with many other European vehicles that require DOT 4 low-viscosity fluid. Using a fluid with the correct boiling points and viscosity ensures consistent pedal feel and prevents brake fade under hard use.
Why Use OEM Brake Fluid for Your Porsche?
Brake fluid is hygroscopic, meaning it absorbs moisture over time. This lowers the boiling point and can cause corrosion. Porsche’s OEM fluid has been tested to ensure long-term compatibility with brake seals, ABS valves, and master cylinders. Aftermarket fluids may not meet the same standards, leading to premature wear or poor performance.
Moisture absorption is a major concern. Porsche recommends changing brake fluid every 2 years or 20,000 miles, whichever comes first. Using the correct part number ensures the fluid fresh and meets the factory fill specification.
Compatibility: Which Porsche Models Use 00004320366?
This fluid is specified for a wide range of Porsche models, including:
Applicable Models
- Porsche 911 (991, 992 generations)
- Porsche Cayman (981, 718)
- Porsche Boxster (981, 718)
- Porsche Panamera (970, 971)
- Porsche Cayenne (958, 9YA/9YB)
- Porsche Macan (95B)
- Porsche Taycan (J1) – Note: Taycan uses a different fluid for the high-voltage system, but the standard brake fluid is still DOT 4 LV.
Always verify your vehicle’s specific fluid requirements in the owner’s manual or via a Porsche dealer. Some models may require alternative fluids if equipped with specific options (e.g., ceramic brakes or track packages).
How to Change Brake Fluid with 00004320366
Changing brake fluid is a standard maintenance procedure that can be done at home with proper tools or by a professional. Here are the basic steps:
Required Tools
- Fresh OEM brake fluid (1 liter is usually sufficient)
- Brake fluid tester or test strips
- Wrench for bleeder valves (typically 8mm or 11mm)
- Clear tubing to fit bleeder valve
- Catch container
- Clean rags
Step-by-Step
- Safety First: Ensure the car is on level ground and the engine is off. Use jack stands if lifting the car.
- Check Old Fluid: Use a tester to see moisture content. If close to replacement, proceed.
- Bleeding Sequence: Typically start at the wheel farthest from the master cylinder (rear passenger side) and work toward the closest (driver front). Check your model’s specific sequence.
- Attach Tubing: Fit clear tubing over the bleeder valve and place the other end in a container with some brake fluid to prevent air backflow.
- Bleed: Have an assistant pump the brake pedal several times, then hold it down. Open the bleeder valve slightly to let fluid escape with air bubbles. Close the valve before releasing the pedal. Repeat until clear fluid comes out without bubbles.
- Refill: Keep the reservoir topped off to avoid air entering the system.
- Final Check: After bleeding all wheels, check pedal feel and brake fluid level. Do a road test in a safe area.
Important: Dispose of old brake fluid according to local regulations. Do not reuse fluid that has been drained.
Where to Buy Porsche Brake Fluid 00004320366
You can purchase this fluid directly from Porsche dealerships or through authorized parts distributors. Many independent parts stores also carry it. When buying online, look for reputable sellers who specialize in OEM European parts. Avoid unknown sellers offering very low prices, as counterfeit or substandard fluid can damage your brakes.
Price Expectation: A 1-liter bottle of Porsche OEM brake fluid typically costs between $25 and $40. It is more expensive than generic DOT 4 fluid, but it ensures compatibility and performance.
Alternatives: If you cannot find the exact OEM part number, you can use high-quality aftermarket DOT 4 low-viscosity fluids from brands like Pentosin, ATE, or Castrol. Ensure they meet or exceed the OEM specifications. However, for warranty or peace of mind, sticking with OEM is recommended.
Final Recommendation
For your Porsche, using the correct brake fluid is not optional. Part number 00004320366 is the factory-specified fluid for most models. While aftermarket alternatives exist, OEM fluid guarantees the correct formulation and performance. Always check your owner’s manual for the fluid type and replacement interval. If you are not comfortable bleeding the brakes yourself, have a qualified mechanic perform the service. Your safety depends on properly maintained brakes.