0 Allison B400, , Transmission Assys, Fits to: , (Used) Allison (AT) TRANSMISSION ASSEMBLY- Model: B400, Serial Number: 6510459662, Part Number: E006178, 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# 6510459662, Casting# 6510459662, Part# E006178