2013 PACCAR MX13, , Engine Assys, Fits to: Kenworth T660, (Used) 2012 PACCAR MX13, ENGINE ASSEMBLY- Family Number: CPCRH12.9M01, Displacement: 12.9L, Horsepower: 455, 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 455, Serial# TBD, Truck Year 2013