Disc Brake Proportioning Valve 9/16" 1/2" Lines & Bracket PV4 Combination

This is a new brass Disc Disc Proportioning Valve with Lines & Bracket for universal applications. Part # PV4, Side Bracket, + 1/2" and 9/16" Lines. Comes with compatible disc/disc proportioning valve kit (self adjusting valve, pre-bent lines for 1/2" and 9/16" master cylinder ports, bracket to mount kit to the side of the master cylinder, and bolts)The proportioning / combination valve performs all of the necessary valving functions with a disc brake conversion… Proportioning:As more force is applied to the brakes the car will begins to lean forward, less braking force is needed in the rear. This valve decreases the pressure to the rear which prevents them from locking up. Applications include but not limited to: 1964-1972 Chevrolet Chevelle 1964-1972 Chevrolet El Camino 1964-1972 Pontiac LeMans 1964-1972 Pontiac GTO 1964-1970 Pontiac Tempest 1964-1972 Oldsmobile Cutlass 1964-1972 Olds 442 1964-1972 Buick Skylark 1970-1972 Chevrolet Monte Carlo 1968-1974 Chevrolet Nova 1971-1974