Product Features: NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Actual OE or equivalent replacement spark plug. 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. 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 Core Center Electrode Tip Material: Nickel Electrode Core Material: nickel Electrode Tip Material: nickel Gap Size: 0.028 in Ground Configuration: Standard Ground Electrode Core Material: Nickel Core Ground Electrode Quantity: 1