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The NGK Iridium IX spark plug delivers extreme ignitability and a durable fine‑wire iridium center electrode for improved acceleration, throttle response and fuel efficiency. A tapered cut ground electrode improves starting and idle, while iridium’s high melting point supports long service life. Recommended for modified or higher‑demand applications as an upgrade from OE nickel plugs.
NGK Iridium IX Spark Plug Box of 4 (BR9ECMIX)
