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The NGK Iridium IX spark plug targets drivers who want sharper throttle response, better fuel efficiency and long-lasting ignitability. A fine iridium center electrode and tapered-cut ground electrode improve starting, idle and throttle feel while iridium’s high melting point reduces wear. Trivalent metal plating helps resist corrosion and seizing, making this an effective upgrade from OE nickel alloy plugs in modified or high-performance setups.
NGK Iridium IX Spark Plug Box of 4 (DVPR9EIX)
