2011 Allison 1000 SERIES, Truck Delivery, Transmission Assys, Fits to: Workhorse Custom Chassis W62, (Used) 2016 Allison (AT), TRANSMISSION ASSEMBLY- ( REMANUFACTURED BY ALLISON ) ( W/PTO ) Model: 1000, Serial Number: 6311158506, 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# 6311158506, Casting# 6311158506, Truck Year 2011 5B4LFG2EXB3446550