2013 PACCAR MX13, Truck Tractor, ECMs, Fits to: Kenworth T660, (Used) 2012 PACCAR MX13, ENGINE ECM- Part Number: 1889041, Serial Number: 3801SA21640127, Engine information- Family Number: CPCRH12.9M01, ESN: Y020084, 2 Rectangular Plug with 62 Pins each, 1 Rectangular Plug with 92 Pins, Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Serial# 3801SA21640127, Casting# 3801SA21640127, Truck Year 2013 1xkadp9x4dj364749