Brake boosters are used in vehicles to assist the driver in applying the brakes with less effort. The booster is what separates a power-assisted braking system from a manual one. It is located between the brake pedal and the master cylinder in the braking system. The purpose of the brake booster is to multiply the force applied by the driver on the brake pedal making it easier to achieve effective braking. This makes stopping easier and driving more enjoyable.
We carry a wide selection of brake boosters and parts from quality suppliers including Carquest, Wearever, Cardone, ACDelco, Bosch, Motorcraft and more.
Buy online or visit your local Advance Auto Parts and have one of our knowledgeable team members help you.
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A brake booster, also known as a power brake booster or vacuum brake booster multiplies the force applied from the brake pedal by utilizing pressure differential inside the shell of the power brake booster. When the pedal is at rest (not depressed) there is an equilibrium within the booster. The front and rear section of the booster is under vacuum provided by the engine. When the brake pedal is depressed atmospheric pressure enters the rear section of the booster. This pushes the diaphragm forward, multiplying the force applied to the master cylinder to provide easy braking.