(Used) 2014 Western Star 4900 SA, DIESEL PARTICULATE FILTER- (Inlet Facing Upward, Outlet Facing Inward, 31 Pin Plug) Type Plug: Round INLET- Part Number: 1608211801300B/1608211801300B Serial Number: 12400030164300/12400030164690 FILTER- REMANUFACTURED- Serial Number: 12400024094880/R12440009957175 Part Number: A 680 491 34 94/1608211806400B/RA 680 491 34 94 Engine: Detroit DD15, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921