Cummins X15 15 L Ultra Low Sulfur Diesel 500 hp Engine, 2020 US EPA Label, Requires Diesel Exhaust Fluid, 6289 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller RTLO18913A 13-Speed Manual Transmission, 13200 lb Front Axle, 40000 lb Rears, Meritor MT-40-14X4 Drive Axles, 3.08:1 Axle Ratio, 53200 lb GVWR, Air Ride Cab, 62 in High Rise Sleeper Cab, Bunk Beds, Aluminum Outer Wheels, 275/80R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 238 in Wheelbase, PTO, Air Sliding 5th Wheel, Dual Fuel Tanks