Detroit Series 60 6 Cylinder 575 hp Engine, Engine Brake, Eaton Fuller 18-Speed Transmission, Differential Lock, 46000 lb Rears, Icepack 2000 Diesel Sleeper Air Conditioner, 295/80R22.5 Front Tires, 11R22.5 Rear Tires, 8-Bag Air Ride Suspension, 4000 mm Wheelbase, GVM 26.5 t, GCM 90 t