7Inch Chrome Power Brake Booster Master Cylinder Disc Drum Kit for Bel Air 55-57

brake chrome cylinder disc drum master master cylinder power

1955-1957 Chevrolet Bel Air. The booster mounts with a 4-bolt pattern. The 4 bolts are in a perfect square and are 3 3/8" apart (center to center). 7" Dual diaphragm booster. Disc/Drum proportioning valve kit.