This is the UPPER piece of the valve cover only. It allows you to run with a different looking valve cover. This is a genuine Cummins product. This sits on top of the CCV filter.
This will also work on 2013-2018 trucks if you have the CCV sensors disabled in tuning, as the 13+ trucks have a sensor in the hose outlet to the turbo.
Cummins product number: 4936347.