0 Allison B400R, , Transmission Assys, Fits to: , (Used) 2006 Allison, TRANSMISSION ASSEMBLY- Model: B400_R, Serial Number: 6510693956, Engine: Caterpillar C7, 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# 6510693956, Casting# 6510693956, Part# Other