Hemi, Gen 3, Variable Timing Replacement Plug. This plug is designed for easy installation into the provision where a VVT sensor was once used in Eagle, Apache, and Hellcat blocks, specifically in race and off highway applications only. Not intended for use in registered, or on highway vehicles. The Hemi Gen III 6.4 / 5.7 / 6.2 / Variable Timing Replacement Plug is only for use during cam swaps, and requires tuning, and/or aftermarket ECU. Designed with tighter tolerances than others on the market and made from a single piece of billet aluminum. Look no further than this for your next hemi cam swap.