2007 Allison B300, School Bus, Transmission Assys, Fits to: Blue Bird All American/All Canadian, (Used) 2006 Allison (AT), TRANSMISSION ASSEMBLY- Model: B300, Serial Number: 6510622068, Engine: Caterpillar C7, Reference images 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# 6510622068, Truck Year 2007, VIN 1BABGBKA77F239231 1BABGBKA77F239231