Required when converting a 79-93 Mustang to disc brakes (to seal the factory prop/combination valve). Full color instructions. New O-ring (don't be forced to use your old one). Made in the USA.
New 1964 1966 Ford Mustang 7" Power Brake Booster Master Disc Drum Prop Valve
1967-69 Ford Mustang 9" Power Brake Booster w/ Master & Adjustable Prop Valve
Ford Mustang Black Wilwood Master Cylinder 9" Black Booster Prop Valve Pedal
67-69 Ford Mustang 9" Power Brake Booster Master Cylinder & Prop Valve Disc/Drum
Ford Mustang Polished Wilwood Master Cylinder Chrome Booster Prop Valve Pedal
3" Front Coil Spring Spacer Lift Kit Pair Chevy II Nova Fox Mustang Cougar Capri