Front. Windshield stopper. A component that isolates the Windshield from another component or it's mounting surface. A component that provides a cushion between the Back Glass and it's mounting surface. A spacer for a Windshield. A Stopper for a Windshield. Back Glass Spacer. Part included in Back Glass. Included with: Back Glass, Lift gate Glass, Lift Glass, Lower Glass, Rear Glass, Upper Glass, Windshield, Windshield Glass.