I have the CAT fuel filter adapter on my 2015. The kit also came with an aluminum bleeder plug. You will not find a better filter than a CAT, no matter what anyone tries to tell you. Go buy one of each and cut them open and see for yourself. The micron rating and build quality on a 1R-0750 CAT fuel filter far exceeds anything Delco, Wix, Donaldson, anybody puts out.

http://www.xtremediesel.com/XDP-Duramax-CAT-Adapter-with-1R-0750-Filter-Bleeder-Screw-and-Spacer.aspx?gclid=Cj0KEQiA08rBBRDUn4qproqwzYMBEiQAqpzns6-hdI7iWDv3UovCQKkY28RrOSZxEACKsM2539Rlg9oaAoEG8P8HAQ