NGK Standard spark plugs are proven technology that offer reliable performance. Actual OE or equivalent replacement spark plug. 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.