ACDelco GM Original Equipment Power Brake Boosters connect the brake pedal apply system to the master cylinder, and are GM-recommended replacements for your vehicle's original components. The brake booster is a force multiplier that causes additional force to be applied to the master cylinder for additional braking power. These brake boosters are engineered to fit your specific GM vehicle and provide the same performance, durability, and service life you expect from General Motors.Get the GM quality you know and trust with ACDelco GM Original Equipment Brakes. Stay with the parts brand your GM vehicle came with and get peace of mind that the fit, form, and function is up to the high standards and specifications of General Motors. ACDelco GM Original Equipment Brakes are engineered for virtually every make and model of GM car, light duty truck, and sport utility vehicle.