Cummins ISX 15 L Ultra Low Sulfur Diesel 400 hp Engine, 2007 US EPA Label, 35715.7 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Digital Mirrors, Engine Brake, RTOC-16909 9-Speed Manual Transmission, Differential Lock, 12350 lb Front Axle, 19000 lb Rears, Meritor MT40-14M Drive Axles, 3.55:1 Axle Ratio, 50351.0 lb GVWR, Air Ride Cab, 61 in Mid Roof Sleeper Cab, Aluminum Outer Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 216 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks