they put the Cummins B3.3, much quieter then my 4720 was. The controls inside are incredible, 3 PTO speeds, independant PTO, Auto PTO, has 3 pt. hitch memory, so when bush hoggin or working on something that you need to have the same height setting on the 3 pt hitch, just turn that on, flick a switch to raise it, when ready to set it back down, just flick the switch again and drops it to the same location