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NGK Iridium IX spark plug is engineered for drivers seeking improved starts, throttle response and long service life. The fine iridium center electrode and tapered ground electrode deliver extreme ignitability and reduced fouling, supporting better idling and acceleration. Iridium's high melting point and durable tip help extend service intervals, while the ceramic insulator and trivalent plating enhance dielectric performance and resist corrosion. Packaged as a four-count set, these plugs are a durable upgrade for performance-minded applications.
NGK Iridium IX Spark Plug Box of 4 (GR5IX)
