Cummins ISB 6 Cylinder 5.9 L Diesel Engine, Air Conditioner, Manual Transmission, 12000 lb Front Axle, 21000 lb Rears, 33000.0 lb GVWR, 11R22.5 Front Tires, 11R22.5 Rear Tires, Spring Suspension, 190 in Wheelbase, 16 ft Folding Spray Bar, LPG Burners, Automated Bar Controls, Hand Spray Wand, Hydraulic Driven Pump