Paccar MX-13 Engine, 18481 Engine hrs, Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Engine Brake, 72 in High Rise Sleeper Cab, 236 in Wheelbase, Air Suspension, Aluminum Outer Wheels, 11R22.5, Air Sliding 5th Wheel, Dual Fuel Tanks