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The NGK Iridium IX solid top spark plug box of 4 offers high ignitability and long life for performance-oriented applications. Its iridium fine-wire center electrode delivers durable, consistent sparking and improved throttle response, while trivalent plating reduces corrosion and seizing during installation and removal. The premium ceramic insulator supports reliable dielectric performance and the copper core aids heat dissipation for steady operation across driving conditions.
NGK Iridium Premium Solid Top Spark Plug Box of 4 (BR9EIX)
