NGK's MOD high-performance ignition coils are designed and built for enthusiast and performance vehicles. Custom primary and secondary windings increase output for optimized performance. NGK MOD ignition coils utilize PET housings, premium vacuum-sealed epoxy resin, and high temperature silicone COP boots to provide maximum levels of dielectric strength, voltage insulation, and durability. All NGK Coils are engineered to optimum performance when paired with NGK Spark Plugs. Developed and rigorously tested in our ISO 17025 accredited test lab under the most extreme conditions, NGK's MOD coil designs will outperform all others - far beyond the operational environments a vehicle would actually experience.