1. The ignition coil provides spark to your engine. 2. Over time, the factory ignition coil can fail, resulting in poor gas mileage, hesitation, and a Check Engine Light (CEL). 3. Replace your faulty ignition coil and restore your vehicle's performance and drivability. 4. The ignition coil can be easily located inside the engine compartment, usually plugged in above the engine, once the engine cover is removed. 5. Built to strict quality control standards Part Numbers: 5F2Z12029AD, 5F2Z 12029 AD, 1F2118100, 1F2118100, 1F21-18-100, DG532, DG485, 1F2118100A, 1F21-18-100A, 1F2U12029AC, 1F2U 12029 CA, 1F2UAC, 1F2U CA, 5F2E12029AA, 5F2E 12029 AA, GY0718100, GY07-18-100 : For 2001-03 E150 Van Ignition Coil for V6 4.2L 2001-03 E250 Van Ignition Coil for 4.2L V6 2004 Truck Ignition Coil for 4.2L V6 2001-08 Truck Ignition Coil for 4.2L V6 2004-07 Ignition Coil for 4.2L V6 2004-07 Ignition Coil for 3.9L V6 2004 Ignition Coil for 3.9L V6 2001-04 Ignition Coil for 3.8L V6 2001-08 Ranger Ignition