2007 Allison 1000 SERIES, Truck Delivery, Transmission Assys, Fits to: Workhorse Custom Chassis W42, (Used) 2006 ALLISON, TRANSMISSION ASSEMBLY- Model: 1000 SERIES, Serial Number: 6310070007, Engine: Cummins ISB, 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# 6310070007, Casting# 6310070007, Truck Year 2007 5B4KPD2U173429075