Cummins ISM 330 10.8L Engine, Engine Brake, Eaton Fuller 9 Speed Manual Transmission, 173" Wheel Base, 6x4, 12,000 lb. Front Axle, 40,000 lb. Rears, 52,000 lb. GVWR, Air Ride Cab, Air Ride Suspension, Sliding 5th Wheel, Cruise Control, Heated Mirrors, Dual High Back Seats, Tilt Steering Wheel