4.2 LITER. Rear mount stop. A component that provides a cushion between the Automatic Transmission Mount and its Mounting surface. A component to which the Trans Support or related component is Mounted to. Automatic Transmission Mount Brace. Automatic Transmission Mount Spacer. Suspension Crossmember Stop. Brace. Crossmember Bracket. Insulator. Spacer. Suspension Crossmember.