2006 Allison B400R, City Transit Bus, Transmission Assys, Fits to: Blue Bird Commercial Bus, (Used) 2006 Allison, TRANSMISSION ASSEMBLY- Model: B400_R, Serial Number: 6510695606, 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# 6510695606, Truck Year 2006, VIN 1BAGNBKA06F248461 1BAGNBKA06F248461