0 Allison N/A, , Transmission ECMs, Fits to: , (Used) Allison (AT), TRANSMISSION ECM- ECM Model: 5421-L Part Number: 29542725, Serial number: BKDYPSM142212AFK, CIN:1B001Q00014 Volts: 12, 2 Rectangular Plugs with 32 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# BKDYPSM142212AFK, Casting# BKDYPSM142212AFK, Part# 29542725