This is designed to cover the cam sensor on your 20v 4ag when you have relocated the cap to the front of the engine or converted to coil on plug. Machined from 6061 aluminum, it is lightweight and compact. This gives more room behind the engine when you have your 20v in an RWD configuration, and cleans up the look as well. Direct replacement for the original cap, reuses the original hardware from the distributor cap.