2011 Allison 2000, School Bus, Transmission Assys, Fits to: Freightliner B2, (Used) 2010 Allison, TRANSMISSION ASSEMBLY- Model: 2000 RETRAN, Serial Number: 9730024784, Part Number: 29550042, Ref Number: 15362, Engine: Cummins ISB 6.7, 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# 9730024784, Truck Year 2011, VIN 4UZABRDUXBCAT9937 4UZABRDUXBCAT9937