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. Weight 0.07lbs Pre-Gap Size 0.028in Reach 0.75 Thread Diameter 14mm Electrical Terminal Type Non-Removable Nut Ground Configuration Single Center Electrode Core Material Copper Resistance 10000Ohms Seat Type Flat Center Electrode Tip Material Nickel Ground Electrode Core Material Nickel Resistor Type Yes Manufacturer Heat Range 7 Hex Size 3/4 in