HKS Super Fire Racing Iridium Spark Plugs

HKS Super Fire Racing spark plugs are high performance Iridium plugs designed to handle advanced levels of tuning and still offer easy start-up and smooth idling. By utilizing a 0.4mm diameter Iridium plug electrode core and a U-shaped grooved electrode, lower voltage is required for spark to occur. This delivers a stronger ignition spark, stable idle, and reduces the likelihood of misfire during high boost.

The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for the VQ35 in a heat range of 7.

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