(Used) 2021 Detroit (AT), TRANSMISSION ASSEMBLY- Model: DT12-OB, Serial Number: C07-00052-097, Part Number: C07-00052-097, Engine: Detroit DD13, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921