ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable 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.
Copper Core Is A Better Conductor Than Iridium Or Platinum Plugs
Copper Dissipates Heat Much Better Than Other Materials
C - Cut Design Un-Shrouds The Spark Kernel For A Better Burn
Unlike Iridium Or Platinum Plugs, The HP Plugs Are Gapable
Machine Rolled Threads For Precise Thread Engagement
Stock Heat Range
Limited 90 Day Warranty