(Used) 2017 Peterbilt 579, DIESEL PARTICULATE FILTER- (Inlet Facing Upward Direction, Outlet Facing Inward Direction, 12 Pin Plug) Type Plug: Round INLET- CPN: 1978969 FILTER- EPN: A041D451 Serial Number: 36228165784 OUTLET- Serial Number: 43237160368 Engine: PACCAR MX13, For condition chk pictures, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921