2008 Allison 2200RDS, , Transmission ECMs, Fits to: Other Other, (USED) 2007 Allison 2100-2200RDS, ECM. S/N-BK5324N37041T2JA P/N-29545324 Model-2100/2200RDS For more information about this item call. We ship Worldwide. 929 W Pulaski Hwy Elkton, MD 21921, Serial# BK5324N37041T2JA, Casting# BK5324N37041T2JA, Truck Year 2008