Machine description: Mack E7 Diesel 310 hp Engine, 2002 US EPA Label, Eaton Fuller Manual Transmission, 12000 lb Front Axle, 22700 lb Rears, 34700 lb GVWR, 275/80R22.5, Air Ride Suspension, 152 in Wheelbase, Dual Fuel Tan... more info about the 2003 Mack CH612.