Cummins ISX12 6 Cylinder 11.9 L Liquid Propane Gas (LPG) 400 hp Engine • 2017 US EPA Label • Engine Brake • Eaton Fuller 10-Speed Manual Transmission • Differential Lock • 12000 lb Front Axle • 38000 lb Rears • 50000 lb GVWR • Air Ride Cab • Aluminum Wheels • 295/75R22.5 Front Tires • 445/50R22.5 Super Singles Rear Tires • Air Ride Suspension • 205 in Wheelbase • Air Sliding 5th Wheel • Dual Fuel Tanks