Cummins ISX15 6 Cylinder 15.0 L Diesel Engine, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, Spicer 4-Speed Auxiliary Transmission, Double Differential Locks, 19400 lb Front Axle, 52880 lb Rears, Neway Drive Axles, 6.36:1 Axle Ratio, 72280 lb GVWR, Air Ride Cab, 50 in Mid Roof Sleeper Cab, 445/50R22.5 Front Tires, 11R24.5 Rear Tires, Dual Steering Boxes, Double Frame, Air Ride Suspension, 246 in Wheelbase, Air Sliding 5th Wheel, Headache Rack

6 Cylinder 14.6 L Diesel Engine