NGK VX Platinum Spark PlugsVX Platinum Spark Plugs are an extension of the successful Fine Wire Spark Plug line, and are made with the same superior manufacturing quality NGK has maintained for years. A basic property of electricity is that it is easier to push a current through a thin wire (which offers less resistance) than a thick wire. Therefore NGK has reduced the VX Platinum Spark Plug's center electrode diameter to 0. 8 mm, allowing your ignition system to operate at its