MACK , (USED) 2004 Mack AC-400 Diesel Engine (EGR-Model), Serial # 4J1325, Engine Family # 4MXKH11.9H70, Test Run 7-9-15, Perfect Runner!! Fully Inspected! 513K Miles, Super Clean Motor! For more information on this engine or any other diesel engine please visit jjrebuilders or call . INV#002529