"Our E3.624 Ford 2-valve racing coil-on-plug more than doubles the energy output of a stock coil. This 2-valve coil features a stainless steel spark plug contact ring with a ferrite lug to suppress EMI/ RFI noise, and optimized resistance and inductance values, all of which increase output at higher RPM levels. The coil is designed to work with the factory DIS electronic controls, as well as high performance aftermarket ignition systems, and offers exceptional performance and long life. Additionally, the spark plug boots are molded in a special high temperature 550 degree F silicone compound. The E3.624 coil fits the 1997 to 2013 2-valve Ford engines. Coils have been tested per CARB standards and were deemed functionally equivalent in OE applications. Specific applications required - do not attempt to use cross reference data.E3 manufactures a variety of high performance coils specifically designed for motorsports applications. All E3 ignition racing coils are engineered to deliver the maximum voltage for all performance applications, and are manufactured to the strictest tolerances to ensure trouble free operation.Key Features- Shock & vibration resistant- High temperature epoxy provides excellent thermal conductivity- Delivers maximum voltage in all performance applications- Durable housing, upgraded internals"