Cummins ISX15 6 Cylinder 15.0 L Diesel 550 hp Engine, 2012 US EPA Label, Eberspacher Engine Coolant Heater, Engine Brake, Allison Automatic Transmission, Triple Differential Locks, 18740 lb Front Axle, 67000 lb Rears, Dana T69-170HP Drive Axles, 4.78:1 Axle Ratio, 85741 lb GVWR, Air Ride Cab, 24 in Mid Roof Sleeper Cab, Bunk Heater, Aluminum Wheels, Dual Steering Boxes, Double Frame, Air Ride Suspension, 262 in Wheelbase, PTO, 22 ft Long Body, Electric Roll Tarp, Spl ...