2011 Allison 2500RDS, Truck Delivery, Transmission Assys, Fits to: Freightliner M2 106, (Used) 2010 Allison (AT), TRANSMISSON ASSEMBLY- Model: 2500RDS, Serial Number: 6311004444, Engine: Cummins ISB 175, 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# 6311004444, Casting# 6311004444, Truck Year 2011 1FVACWDTXBHAY2317