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Universal Blackout Oval Master Cylinder & Prop Valve Kit, 1.125

Universal Blackout Oval Master Cylinder & Prop Valve Kit, 1.125

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Universal blackout oval master cylinder & Proportioning valve Kit will upgrade your original.
Part #: 51-856246-1
$239.99 Kit
Ships Direct from the Manufacturer
1966 thru 1979
See applications below for exact details.

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  • Universal blackout oval shaped master cylinder
  • 1.125 inch bore
  • Flat top lid with stainless steel hex bolts
  • Manual rod gasket
  • Power adapter sleeve
  • Adjustable proportioning valve 
  • 2 Outlets 3/8"-24 1 Outlet 3/8-24"

Adding power brakes is one of the best performance upgrades you can make. Mac's offers brake booster and master cylinder combos to make your conversion quick and easy. It doesn’t matter if you have a single or dual reservoir master cylinder to begin with, our master cylinder kits are designed with your application in mind making the installation as simple as possible.


Make / Model Series Body Notes Year
FORD BRONCO 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979