2010 Allison 2000, School Bus, Transmission Assys, Fits to: Freightliner B2, (Used) 2009 Allison, TRANSMISSION ASSEMBLY- Model: 2000 RETRAN, Serial Number: 9730030932, Part Number: 29544719, 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# 9730030932, Casting# 9730030932, Truck Year 2010 4UZABPDJXACAN3135