2012 Allison 2500HS, Truck Delivery, Transmission Assys, Fits to: International DuraStar 4300, (Used) 2011 Allison TRANSMISSION ASSEMBLY- Model: 2500HS, Serial Number: 6311092765 Engine: DT466, 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# 6311092765, Casting# 6311092765, Truck Year 2012 1HTMMAAL1CH117177