Paccar PX-9 6 Cylinder 8.9 L Diesel 345 hp Engine, US EPA Label, Webasto Engine Coolant Heater, Engine Brake, Allison Automatic Transmission, Differential Lock, 13200 lb Front Axle, 23000 lb Rears, 36200 lb GVWR, Air Ride Cab, 36 in Flat Top Sleeper Cab, Aluminum Wheels, 11R24.5, Air Trac Air Ride Suspension, 226 in Wheelbase, 11 ft 10 in x 100 in Bed, Pintle Hitch