Engineered specifically for OE applications, NGK Standard spark plugs provide OE quality nickel alloy reliable performance and design. NGK's legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance, while triple gasket sealing prevents combustion gas leakage. Solid 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties. Product Features: ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode provides consistent performance RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs NGK's OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal Specifications Center Electrode Core Material: Copper Center Electrode Design: Standard Center Electrode Insulator Tip Projection: 0.20 in Center Electrode Projection: Long Projection Center Electrode Tip Material: Nickel Electrical Terminal Type: Removable Nut Grade Type: Standard Replacement Ground Configuration: Multi-Ground Electrode Ground Electrode Core Material: Nickel Ground Electrode Quantity: 3 Ground Electrode Tip Design: Standard