MACK , (USED) 1998 Mack E7 Diesel Engine (Passenger Side ECM Mount), Serial # 8O0812, Family # WMKXH11.9E53, 11.9L, LOW MILES!!!! TEST RUN WATCH VIDEO ON JJ REBUILDERS WEBSITE. Visit JJREBUILDERS for more information on this and any other Diesel Engine you may be looking for. Call 1-800-971-3019. ref INV # 004094