Cummins X15 6 Cylinder 15.0 L Diesel 500 hp Engine, 2021 US EPA Label, Requires Diesel Exhaust Fluid, 4093 Engine hrs, Engine Brake, Eaton Fuller Endurant EEO-18F112C 12-Speed Automated Transmission, Differential Lock, 13200 lb Front Axle, 40000 lb Rears, Spicer DSP40 Drive Axles, 3.70:1 Axle Ratio, Air Ride Cab, 76 in Mid Roof Sleeper Cab, Bunk Beds, Bunk Heater, Thermo King TriPac Evolution Auxiliary Power Unit, Aluminum Wheels, 11R22.5 Front Tires, 11R22.5 Rear Ti ...