Detroit DD15 Diesel 560 hp Engine, 21507 Engine hrs, Engine Brake, Eaton Fuller 18-Speed Transmission, 46000 lb Rears, SleepAir Diesel Sleeper Air Conditioner, 385/65R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 4400 mm Wheelbase, GVM 24 t, GCM 90 t, A263603