Left.W/AWD. Rear Left. Splash shield. 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. Parking Brake. shoes. Splash Guard. Backing. Cover , D.