SuperCoils (Coil on Plug) with Extended Boots for Ford Modular 3V 4.6L V8 / 5.4L V8 / 6.8L V10 Engines.Advanced, optimized winding technology.Highly specialized silicone magnetic steel cores.Optimized resistance and turns ratios.Delivers up to 15% more energy than OEM coils for superior combustion.Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity.Direct “plug and play” replacements for OEM coils.