2021 Ram 3500 H.O.
1075 tq and 37,100# towing. Video
Forum Discussion
Although I will say that with the power output of the 2500 or standard output Cummins, a CP3 would still be doable while meeting emissions. I don't think the same can be said with the HO power ratings. Maybe the CP4 is only on the HO and the CP3 on the standard output. Just a theory if that truly is a CP3.
