(Used) 2021 Detroit (AT), TRANSMISSION ASSEMBLY- Model: DT12-OC, Serial number: 716350E0121280, Part Number: C07-00052-142, Engine: Detroit DD15, Reference images for condition For more information about this item, give us a call. We we ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921