2015 PACCAR MX13, Truck Tractor, Engine Assys, Fits to: Kenworth T680, (USED) 2014 PACCAR MX-13 - ENGINE ASSEMBLY - Family Number: EPCRH12.9M01. Horsepower: 455. Displacement: 12.9 L. Serial Number: Y051010. E.C.S.: DDI, TC, CAC, ECM, EGR-C, OC, SCR-U, 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 455, Serial# Y051010, Casting# Y051010 1XKYDP9X3FJ439474