(Used) 2010 Allison, TRANSMISSION ECM- Serial Number: BK5536N10048589, Part Number: 29545536, ECM Model: A51, Trans Model: 2500PTS, Serial Number: 6310993052, Engine: Cummins ISB 6.7, Trans: P-40553, For more information about this item, give us a call. We ship worldwide! ( CRG HEAVY TRUCK PARTS ) 929 W PULASKI HWY, ELKTON, MD 21921