Pack of 8 High Performance Ignition Coils for Ford Lincoln Mercury 4.6L 5.4L Compatible with DG508 DG457 FD503 High grade materials. Providing High Electrical Resistance, strong Spark from plugs, and being resistant to Corrosion and Abrasion 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