2003 Allison 2400, , Transmission ECMs, Fits to: Other Other, (USED) 2002 Allison 2000/2400, TCM. S/N-BKDCYFM321573309 P/N-29537441 Model-2000/2400 For more information about this item call. We ship Worldwide. 929 W Pulaski Hwy Elkton, MD 21921, Serial# BKDCYFM32157309, Casting# BKDCYFM32157309, Truck Year 2003