2013 Peterbilt 389 Truck Tractor,Conventional, 50350# GVWR, 12.9L Paccar MX-13, Diesel w/DEF, 13 Spd Hi/Lo, Air Ride, Air Slide,, Rear Super Single Tires, S/N: 1XPXAP9X6DD190999., 831653 Miles Indicated. 21886 Hours Indicated., NOTE:, Has Issues with DEF System, which has been electronically disengaged.