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The NGK Iridium IX spark plug is engineered for drivers seeking sharper throttle response and lasting ignitability. A fine iridium center electrode provides durable, consistent sparks while the tapered-cut ground electrode improves starting, idle and throttle response. Trivalent metal plating reduces corrosion and seizing, positioning these plugs as an effective upgrade over OE nickel alloy units for modified or higher-demand driving conditions.
NGK Iridium IX Spark Plug Box of 4 (LTR6IX-11)
