For Ford Lobo 1999-2003 V8 4.6L Front Left Except 7700 lb GVW; w/ Front&Rear Disc Brake System. For Ford Lobo 1999-2003 V8 5.4L Front Left Except 7700 lb GVW; w/ Front&Rear Disc Brake System. It is typically positioned around the brake rotor or disc and is responsible for applying the necessary strength to slow down or stop the rotation of the wheels.