Backing plate. Left.3/4 TON. Rear. Right.3/4 TON. A Backing Plates used on a drum Brake Braking system, used to contain Brake shoe dust, as well as protect the Brake drum components from water, dirt and debris. A Shield used to contain the Brake dust produced by the Brake pads of a vehicle's disc Brake calipers. This typically is mounted to the vehicle's wheel hub. Additionally, it functions as a splash guard to protect a vehicle's disc Brake rotors from water, dirt and debris. Acts as a anchor for one end of the parking Brake shoes used in a DIH application. Parking Brake. cover. Dust. Splash Guard. Caliper. Parking Anchor Block.