2010 Allison 2500PTS, School Bus, Transmission Assys, Fits to: Freightliner B2, (Used) 2009 Allison, TRANSMISSION ASSEMBLY- Model: 2500PTS, Serial Number: 6310937768, Engine: Mercedes MBE 926, 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# 6310937768, Casting# 6310937768, Truck Year 2010 4UZABPDJ7ACAN3156