2012 Detroit DD15, CORE ENGINE, Belt Tensioners, Fits to: Freightliner Cascadia 125, (Used) Detroit DD15, ENGINE BRACKET WITH BELT TENSIONER- Part Number: A4721550335, BELT TENSIONER- Part Number: A4722001070, A47020070, Detroit EA4722001070 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# N/A, Casting# N/A, Part# A4721550335 472903S