2001 Cummins ISB 5.9, Engine Assys, (GOOD USED) 2001 Cummins ISB 5.9L Diesel Engine, CPL# 2686, 250HP @ 2300RPM, CM550, 24 Valve, Fits 1998 1999 2000 2001 2002, 6 Cylinders, 5.9L, Turbocharged, Engine Serial# 60243030,