NGK Single Iridium Spark Plug Box of 4 (UR45IX) Exterior Styling>Bumper Covers - Front The NX direct port EFI

The NX direct port EFI systems are for the crowd who have already modified their engines with high strength internal engine parts

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NGK Single Iridium Spark Plug Box of 4 (UR45IX) Exterior Styling>Bumper Covers - Front The NX direct port EFINGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high