1996 Allison AT545, Truck Delivery, Transmission Assys, Fits to: GMC C7000 Topkick, (Used) 1996 Allison (AT), TRANSMISSION ASSEMBLY- Model: AT545, Serial number: 3210774072, Part Number: 15986028, Engine: Caterpillar 3116, 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# 3210774072, Casting# 3210774072, Truck Year 1996 1GDK7H1J6TJ505058