Cummins ISB 6.7 L Diesel 280 hp Engine, 2009 US EPA Label, 6361 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Allison 3000 Automatic Transmission, 10000 lb Front Axle, 21000 lb Rears, Meritor RS-21-145 Drive Axles, 5.57:1 Axle Ratio, 31000 lb GVWR, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Spring Suspension, 244 in Wheelbase, Flatbed, In-Cab Attenuator Controller, Arrow Board, In-Cab Arrow Board Controller, Scorpion 10320 Crash Attenuator