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NGK (6774) IZFR6K13 Laser Iridium Spark Plug, Pack of 1Laser Iridium Spark Plugs provide superior ignitability and long service life. Smallest tip diameter available iridium/platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. Laser welded Iridium center electrode tip ensures...$8.00$8.00