Seller notes

[Set of 6] HKS 50003-M50HL Super Fire Racing Iridium Spark Plugs Heat Range #10 HKS Super Fire Racing Spark Plugs Features 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 mi...

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