A power brake booster is a device that allows the driver to exert less effort when applying the brake pedal. It uses the vacuum from the engine that allows a rod to actuate the master cylinder piston without requiring too much effort when pressing the brake pedal. A broken power brake booster will result in a harder brake pedal feel that will require more force on the pedal to activate the brakes. Auto Parts Network carries high quality parts that will help improve your driving experience.
Power Brake Booster 
