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The NGK Iridium IX DPR9EIX-9 is a single iridium-tipped spark plug with a 14 mm thread, a 9 heat range and a 0.9 mm gap. Its fine iridium center electrode is far thinner than a platinum or nickel tip, which lowers the voltage the ignition system needs to fire and sharpens the spark. The metal shell plating is built to resist corrosion. It suits riders and drivers of high-revving engines who want a durable plug and quicker starts; against standard nickel plugs it lasts longer and holds its gap better, while copper-core plugs remain the cheaper choice for ordinary engines.
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The NGK Iridium IX is a spark plug, part number DPR9EIX-9. It uses an iridium center electrode with an ultra-small diameter.
The iridium electrode is 25% smaller than a platinum electrode and 1/4 the size of a conventional nickel electrode. The small center electrode lowers the voltage requirement and extends ignition system life.
The metal shell has a new plating with improved anti-corrosion qualities.
