Cat 3406 6 Cylinder 14.6 L Diesel Engine, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 38000 lb Rears, 50000.0 lb GVWR, Air Ride Cab, 63 in Flat Top Sleeper Cab, Aluminum Wheels, 275/70R22.5 Front Tires, 255/70R19.5 Rear Tires, Low Air Leaf Air Ride Suspension, 269 in Wheelbase, PTO, Hydraulic Lift, Chain Tie Downs