2011 Allison 2200HS, Truck Delivery, Transmission Assys, Fits to: Workhorse Custom Chassis W62, ( Used ) 2010 Allison (AT), TRANSMISSION ASSEMBLY- Model: 2200HS Serial Number: 6311066452, Engine: GMC/Chevy 6.0L gasoline, 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# 6311066452, Casting# 6311066452, Truck Year 2011 5B4LFG2E1B3446355