Engines | Mounts, , (USED) 1991 Mack E7-350 Diesel Engine (MECHANICAL FUEL PUMP), Serial # 1B0470, 399,227 Miles, Perfect Runner!!! Test Run 10-6-15, Fully Inspected!! Visit jjrebuilders.com for more information on this or any other diesel engine. Call 1-800-971-3019. INV # 002673