NGK Spark Plug D8EA - Reliable OEM Ignition Performance. Trusted by Manufacturers Worldwide. The NGK Spark Plug D8EA is a standard, non-resistor plug designed for consistent ignition, fast starts, and long service life. Built with a solid copper core and nickel alloy electrode, the D8EA ensures efficient heat transfer and reliable performance under demanding conditions. Trusted by automotive, motorcycle, ATV, and marine engine manufacturers, it's the go-to choice for dependable OEM-quality ignit