Mounting hardware. SmartLock Trans Brake, electronic transmission brake for use with 1998.5-2002 Dodge 5.9L Key Features Prolongs automatic transmission durability by increasing its holding capacity Locks the torque converter and simultaneously raises trans-line pressure Automatically activates when Banks Brake is active Saves wear-and-tear on your service brakes Cools transmission-fluid temperatures Eliminates excessive clutch slippage For use with Banks Brake For vehicles with Automatic Transmission 50 State Compliant CARB E.O. D-161-140