If you're running a Cummins 6.7L in your Dodge 2500 or 3500 from 2008-2017, this intake manifold plenum plate is a serious upgrade! It's CNC machined from billet 6061 T6 aluminum that's a full 1/2 inch thick - this thing is built tough. What it does is replace your factory grid heater, which actually chokes off airflow to the rear cylinders. By removing that restriction, you get much better airflow throughout your entire intake system. This means lower exhaust gas temperatures, reduced smoke, and better overall performance. The plate is machined on the back side too for even more plenum flow improvement. It comes with 4 spacer blocks for your fuel rail and everything bolts right up like factory. People who install these typically notice better fuel economy and reduced air restriction almost immediately. The quality is seriously impressive - you can tell it's precision made. Whether you're dealing with high EGT issues or just want to optimize your Cummins' performance, this grid heater delete plate is one of the best bang-for-your-buck mods you can do. Just make sure your specific year is compatible before ordering!