0 Allison MT643, , Transmission Assys, Fits to: , (Used) Allison (AT), TRANSMISSION ASSEMBLY- Model: MT643, Serial Number: 2410559694, Part Number: E001393, Reference image 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# 2410559694, Casting# 2410559694, Part# E001393