(Used) 2012 Freightliner Cascadia 125, DIESEL PARTICULATE FILTER- (Inlet Upward Direction, Outlet Inward Direction) For a Cummins ISX 3719 Engine, DPF Filter CPN: 2871581, DPF Filter EPN: Q628477, DPF Filter Serial Number: 36034165506, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921