NGK Standard spark plugs are proven technology that offer reliable performance. Actual OE. NGK Standard plugs are treated with corrosion-resistant plating to ensure ease of installation and removal. | NGK Standard plugs are an OE cornerstone that have provided decades of reliable performance. Engineered specifically for OE applications.  The solid Copper Core offers superior heat dissipation, conductivity and broad heat range. For even greater performance consider upgrading to a NGK Iridium IX Spark Plug.