Cummins ISB6.7 6.7 L Ultra Low Sulfur Diesel 250 hp Engine, 2017 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Eaton Fuller Automatic Transmission, 10000 lb Front Axle, 19000 lb Rears, 25999 lb GVWR, 265/75R/22.5 Front Tires, 265/75R/22.5 Rear Tires, Spring Suspension, 272 in Wheelbase, General 26 ft 6 in Long x 102 in Wide x 108 in High Body, Curbside Door