Mounting hardware. SmartLock Trans Brake, electronic transmission brake for use with 1999-2003 Ford 7.3L Key Features: Prolongs transmission durability by increasing its holding capacity Locks the torque converter while raising trans-line pressure Automatically activates when Banks Brake is active For vehicles with Automatic Transmission ONLY Saves wear-and-tear on your service brakes Cools transmission-fluid temperatures Eliminates excessive clutch slippage For use with Banks Brake 50 State Compliant CARB E.O. D-161-140