Cummins N14 6 Cylinder 14.0 L Diesel 350 hp Engine, 1993 US EPA Label, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 36000 lb Rears, 48000 lb GVWR, 295/75R22.5, Hendrickson Air Ride Suspension, 167 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks