Made with a Copper Core Which is a Better Conductor than Platinum and Iridium. Delivers a Stronger Spark Especially in High Performance Application Where High Combustion Pressures Are Present. Copper is Much Better at Dissipating Heat Than Other Materials Which Lessons the Chance of a Misfire. Gap able Allowing You to Open the Gap Exposing a Larger Flame Kernel or Close it if Needed For High Boost Applications. All ACCEL HP Spark Plugs Have Machine Rolled Threads Allowing For a More Precise Thread Engagement and Torque Retention. One Piece Design - Won't Break Off In Head During Removal Like Two Piece Design Copper Core - Copper Is A Better Conductor Than Iridium Or Platinum Plugs Heat Dissipation - Copper Dissipates Heat Much Better Than Other Materials "c" - Cut Design - Un-Shrouding The Spark Kernel Gapable - Unlike Iridium Or Platinum Machine Rolled Threads-Precise Thread Engagement Limited 90 Day Supplier Warranty
