Cat 3406 15.8L Diesel Engine, 600 Adv Horsepower, Engine Brake, Eaton Fuller 18 Speed Manual Transmission w/ 2 Speed Auxiliary, 274" Wheel Base, 8x4, 18,740 lb. Front Axle, 52,000 lb. Rears, 70,740 lb. GVWR, Air Ride Cab, Air Lift Pusher Axle, Air Ride Suspension, Double Frame, Dual Exhaust, Sliding 5th Wheel, Headache Rack, Sun Visor, Air Conditioning, Cruise Control, Power Windows, Power Mirrors, Heated Mirrors, Dual High Back Seats, Tilt Steering Wheel