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NGK Iridium IX spark plugs emphasize durability and consistent ignitability with a fine iridium center electrode that outlasts platinum. Built using high-grade alumina ceramic and a copper core to manage heat, they support reliable starts and steady performance. The iridium tip and ground-electrode design promote improved throttle response, fuel efficiency and anti-fouling characteristics, making these plugs a strong choice for modern high-temperature engines.
NGK Iridium IX Spark Plug Box of 4 (IFR9H-11)
