Scitoo Ignition Coils for Ford 4.6L 5.4L V8 DG508 DG457 DG472 DG491 FD503 Complete Set of 8pcs For Ford Lincoln Mercury DG-508 , DG-457 , DG-472,DG-491/DG508, DG457,DG472,DG540,DG491,FD503 5C1412 GN10164. COP9 FD503 F523 FD493 C566 5C1412 GN10164 1L2U12029AA 1L2U12A366A Complete set of 8 Ignition Coils