CarBole Pack of 8 Ignition Coils for Ford Lincoln Mercury 4.6L 5.4L V8 Compatible with DG508 DG457 FD503 F150 Ford DG508 Ignition Coil Spec Replacement 8 Pack. spec replacement for Ford DG512 Delivers more torque quicker starts instant throttle response better acceleration a smoother idle and improved gas mileage Engineered specifically for 1998 to 2008 4.6L 5.4L and 6.8L Ford 2 valve modular engines Reduces misfire and eliminates hesitation DG-467 DG-473 DG-508 DG-491 F-150 1L2U12029AA 1L2U12A366A COP9 FD503 F523 FD493 C566 5C1412 GN10164