The auto brake booster to brake is like power steering to steering. The car brake booster is an automotive component which is designed to decrease the braking efforts. While it is quite simple to use however, understanding of it is pretty complex. Basically, it sits between the brake pedal and master cylinder and when driver pushes the pedal, the brake booster amplifies force exerted on the master cylinder. As a result, drivers don’t need put too much pressure on the pedal to apply brake and anyone can apply brakes regardless of size and strength.