2013 Allison 4500RDSP, Truck Delivery, Automatic Shifter Assys, Fits to: International WorkStar 7600, (Used) 2013 International WorkStar 7600, AUTOMATIC SHIFTER ASSEMBLY- Make: Allison, Type: Automatic Transmission: 2012 Allison 4500RDSP, 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# 6610360568, Casting# 6610360568, Truck Year 2013 1HTGRSJT3DJ419715