Left.W/BREMBO. Rear Left. Rear Right. Right.W/BREMBO. 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. Brembo Brakes. Parking Brake. Performance Brakes. Dust. guard. Adapter. Parking.