Champion 7318 Double Platinum Power Replacement Spark Plug, (Pack of 1) Longer Lifespan: Double platinum center and ground electrode for greater wear resistance Sharper Spark Focus: Thanks to fine wire and v-trimmed electrodes Powerful: Stronger and quicker acceleration than conventional plugs Heat-Active Alloy: Allows electrodes to reach optimal temperature quickly and remain stable Compatible with the Following Applications: Automotive, Marine Focused spark for maximum power Exclusive Heat-Active alloy maintains stable operating temperature under all load conditions Faster throttle response