2016 Detroit DT12-OA, Truck Tractor, Transmission Assys, Fits to: Western Star 5700, (Used) 2015 Detroit (AT), TRANSMISSION ASSEMBLY- Model: DT12-OA, Serial Number: 716330R1002526, Part Number: C07-00052-055/086, Engine: Detroit DD16, 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# 716330R1002526, Casting# 716330R1002526, Truck Year 2016 5KJJBHD17GLHC8425