(Used) 2020 Western Star 4900EX, DIESEL PARTICULATE FILTER- (Inlet Facing Upward, Outlet Facing Inward, 17 and 18 Pin Plug) Type Plug: Rectangular INLET- Serial Number: 12460015092527 Part Number: 160821680150OA DPF FILTER- Serial Number: 12400015098872 Part Number:A6804914194 Engine: Detroit DD16 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