Brake Booster Kit includes the parts you need to convert from manual brakes to a vacuum assisted power brake system. Kit comes with 7" dual diaphragm booster, frame bracket, dual reservoir master cylinder, bottom mount disc/drum combination valve assembly.
Boosters require a minimum of 16" of vacuum and will not work with radical cams or blowers where there is not enough vacuum; measure before ordering. For 4-wheel disc brakes, #37-8450 combination valve will need to be purchased. Brake Booster Kits fit trucks with automatic transmissions only.