2012 Allison 2100RDS, Truck Delivery, Transmission Assys, Fits to: Kenworth T270, (Used) 2011 Allison (AT), TRANSMISSION ASSEMBLY- Model: 2100RDS, Serial Number: 6311080364, Engine: Paccar PX-6, 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# 6311080364, Casting# 6311080364, Truck Year 2012 2NKHHM6X8CM324424