Cummins ISB 6.7 L Ultra Low Sulfur Diesel 250 hp Engine, US EPA Label, 11480 Engine hrs, Air Conditioner, Cruise Control, Allison 2500 Automatic Transmission, 12000 lb Front Axle, 21000 lb Rears, Detroit Drive Axles, 4.78:1 Axle Ratio, 33000 lb GVWR, Aluminum Wheels, Airliner Air Ride Suspension, 252 in Wheelbase, PTO, Receiver