Cummins ISB6.7 250 6 Cylinder 6.7 L Ultra Low Sulfur Diesel 250 hp Engine, 2014 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, 11223.7 Engine hrs, Exhaust Brake, Allison 2200 Automatic Transmission, 10000 lb Front Axle, 17500 lb Rears, Detroit DA-RS-17.5-4 Drive Axles, 5.56:1 Axle Ratio, 26000 lb GVWR, Air Ride Cab, 11R22.5, Airliner Air Ride Suspension, 254 in Wheelbase, Supreme Corp. 24 ft x 102 in Wide x 90 in High Body, Liftgate