Cummins ISX15 550 hp Engine • 2016 US EPA Label • 13537 Engine hrs • Eaton Fuller 18-Speed Manual Transmission • 13220 lb Front Axle • 40000 lb Rears • 53220 lb GVWR • Double Differential Locks • 56 in Mid Roof Sleeper Cab • 236 in Wheelbase • Air Suspension • Aluminum Wheels • 11R22.5 Front Tires • 11R22.5 Rear Tires • Wet Kit • PTO • Air Sliding 5th Wheel • Dual Fuel Tanks