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Counter Tips: Master Cylinders

Get All the Parts for the Job

  • Power Brake Booster

  • Calipers (always replace in pairs)

  • Tools (flare wrenches, torx-head driver, etc.)

  • Brake Fluid

  • Brake Pads

  • Hoses/Lines

  • Hardware Kits

  • Rotors/Drums

  • Combination Valve

Symptoms of Master Cylinder Failure

  • Brakes drag

  • Leaking fluid

  • Swollen rubber components

  • Excessive play in pedal

  • Hard pedal

  • Decreasing pedal travel

  • Pedal sinks to floor

Do the Job Right

  • Bench bleed Master Cylinder before installation
    All air must be removed from the master cylinder using the bench bleed method. Failure to do so is the #1 cause of failure and may result in spongy or low brake pedal; this will void the warranty. Use bleeder kit supplied.

  • Use a wooden dowel or blunt tool
    Use only a dowel or blunt tool during bench bleeding. Sharp or metal tools can cause damage to the master cylinder piston and bore.

  • Flush entire brake system before installation
    Removing all air, dirt and contaminants from system before installing master cylinder helps prevent premature brake system failure.

  • Use approved/new brake fluid

    1. Use only brake fluid recommended on the reservoir lid, owner’s manual, or service manual. Never use petroleum-based fluids, or mix fluids
    2. Always use new brake fluid from a sealed container. Reusing old brake fluid will return contaminants and moisture to the system which can cause premature system failure.


  • Inspect entire brake system
    Inspect the entire brake system before replacing parts. Replace cracked or extremely corroded lines.

  • Follow CARDONE’S easy-to-read instructions
    Follow the step-by-step, fully-illustrated instructions included with every unit. ALSO follow any specific instructions provided by vehicle manufacturer.

Avoid Warranty Problems - View Warranty Guidelines Video on YouTube!

  • Unit has never been on vehicle
    If unit has never been on car, return to store inventory (do not return to manufacturer). Signs to look for:

    1. No brake fluid in unit

    2. Installation kits unused

    3. Unit very clean

    4. No score marks on seats

  • Check for installer damage
    Signs of improper installation, mishandling and tampering by the installer include:

    1. Swollen rubber components

    2. Missing parts

    3. Broken parts or castings

    4. Stripped threads
      NOTE: Improper installation includes failure to bench bleed units.

  • Defects for warranty consideration
    To qualify for possible warranty coverage, the unit must:

    1. Have color code visible

    2. Show no signs of abuse

    3. Appear to have been on car

    4. Have scored seats

    5. Have all parts returned

  • Important notes

    1. Warranty void if unit disassembled

    2. Remind customer to always return cores in replacement part original packaging

  • Beware of cores claimed as defects
    Do not accept unit for warranty if:

    1. No color code visible

    2. Unit is very rusty

    3. Unit has missing parts

Use CARDONE Master Cylinders for Long Life & Proven Performance

  • Anti-corrosion coating

  • Bores fine-tuned to O.E. microfinish

  • Finest quality rubber components (EPDM classification)

  • Bleeder kits and essential hardware included

  • Stringent quality control in all stages of manufacturing

  • Complete easy-to-follow instructions included

View our monthly new part number releases of the latest domestic & import vehicles.

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