Engines | Mounts, , (GOOD USED/ RUN TESTED, FULLY INSPECTED) 1995 Mack EM7 300 Diesel Engine (SEMI ELECTRONIC FUEL PUMP), Serial # 5F1361, 300HP @ 1750LBS, 11GBA 78645, LOW MILES!!!! Test Run. Visit JJREBUILDERS for more information on this and any other Diesel Engine you may be looking for. Call 1-800-971-3019. REF INV # 004733