Cummins X15 6 Cylinder 15 L Diesel 565 hp Engine, 2018 US EPA Label, Requires Diesel Exhaust Fluid, 12495 Engine hrs, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, 13200 lb Front Axle, 38000 lb Rears, 51200 lb GVWR, Air Ride Cab, 84 in Mid Roof Sleeper Cab, Bunk Beds, Carrier Auxiliary Power Unit, Aluminum Wheels, 285/75R22.5, Air Ride Suspension, 282 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks