The ATE Power Brake Booster - 300236 is a hydraulic device that assists in applying pressure to the brakes of a vehicle. It is designed to increase the force applied by the driver's foot on the brake pedal, making it easier to slow down or stop the vehicle. The brake booster is typically located between the brake pedal and the master cylinder, and uses a vacuum or hydraulic pressure to amplify the force applied by the driver. This product is specifically designed by ATE to provide reliable and efficient braking performance for various types of vehicles.