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Disc Brake Conversion Proportioning Valve for Dual Bowl Master Cylinder

Disc Brake Conversion Proportioning Valve for Dual Bowl Master Cylinder

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1955-1964 Ford Thunderbird Disc Brake Conversion Proportioning Valve, For Dual Bowl Master Cylinders
Part #: 66-73874-1
$84.99 ea.
Order by 2pm E.T. ships today (M-F)
In Stock
1948 thru 1979
See applications below for exact details.

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  • Quality Universal Valve
  • Not A Stock Replacement
  • Used For Power Disc Brake Conversions

One of the best upgrades you can perform is to add modern disc brakes with a dual master cylinder.  The safety and drivability benefits will reward your efforts.  This brake distribution block (proportioning valve) is needed to install the dual bowl master cylinder to this type of system.  It provides an appropriate balance of fluid pressure for most applications and is very reliable.  It even includes an electrical hookup for a brake light to warn you if there is trouble in your brake system.



Make / Model Series Body Notes Year
FORD THUNDERBIRD 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964


Combined Cancer/Birth Defect
Prop 65 Warning

WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer on birth defects or other reproductive harm. for more information, visit