Information： -A brake booster is an enhanced master cylinder setup used to reduce the amount of pedal pressure needed for braking. It employs a booster set up to act with the master cylinder to give higher hydraulic pressure to the brakes and/or lower force applied on the brake pedal through a brake booster push-rod. Compatibility Chart： For 1987-1990 Ford Bronco II For 1991-1994 Ford Explorer For 1987-1989 Ford F-250 For 1987-1989 Ford F-350 For 1987-1994 Ford Ranger For 1994 Mazda B2300 For 1994 Mazda B3000 .
