2017 Allison 2500PTS, School Bus, Transmission Assys, Fits to: International CE Bus, (Used) 2016 Allison, TRANSMISSION ASSEMBLY- Model: 2500PTS, Serial Number: 6310992477, Engine: ISB, 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# 6310992477, Casting# 6310992477, Truck Year 2017 4DRBUC8P2HB427997