2011 Allison 1000HS, Truck Delivery, Transmission Assys, Fits to: Workhorse Custom Chassis W62, (Used) 2010 Allison (AT), TRANSMISSION ASSEMBLY- Model: 1000HS, Serial Number: 6311055851, Engine: GM/Chev (HD) 6.0L GAS, 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# 6311055851, Casting# 6311055851, Truck Year 2011 5B4LFG2E6B3446612