Engines | Mounts, , (USED) 2004 Mack AI-400 Diesel Engine (NON EGR), Serial # 4C0837, 400HP @ 1950, Engine Family # 4MKXH11.9V65, LOW MILES! Test Run 5-17-16, Exhaust Family # EM, EC, TC, CAC, DI, SPL,1EGR. Visit jjrebuilders.com for more information on this and any other Diesel Engine you may be looking for. Call 1-800-971-3019. ref INV # 002908