Cummins ISX15 6 Cylinder 15 L Diesel 400 hp Engine, 2014 US EPA Label, Requires Diesel Exhaust Fluid, 14372 Engine hrs, Engine Brake, Eaton Fuller Manual Transmission, Differential Lock, 12350 lb Front Axle, 40000 lb Rears, Meritor MT-40-14X Drive Axles, 52350 lb GVWR, Air Ride Cab, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 175 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks