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NGK (6544) IMR9D-9H 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...$8.20$13.79
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