2010 Cummins ISM, Truck Tractor, Engine Assys, Fits to: Kenworth T660, (Used) 2009 CUMMINS ISM ENGINE ASSEMBLY, Family Number: 9CEXH0661MAF, Horsepower: 425, CPL: 3330, Ref. No.: E6AJ51505252505150, E.C.S.: PCM,EGR,PTOX, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Horse Power 425, Serial# 35256286, Casting# 35256286 1XKAD08X6AJ271185