0 Allison B400R, , Transmission Assys, Fits to: , (USED) AT Allison B400-R Transmission Assembly Serial # 6510453165 To find out more about this transmission give us a call. We ship worldwide! Complete Recycling Group (CRG) TAG# 9554 Model: B400-R AT/MT: AT, Serial# 6510453165, Casting# 6510453165,