MACK , (USED) 1999 Mack E7 Diesel Engine (Passenger Side ECM Mount), Serial # 9D3736, Family # XMKXH11.9E54, 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 # 004063 https://www.jjrebuilders.com/engine-for-sale/? vid=2269&unit=1999-mack-e7-complete-engine