These are NGK Iridium Spark plugs for the 350Z/G35 Engine. Iridium Spark Plugs are recommend for higher hp vehicles, or those who plan going with forced induction. This is a colder #7 spark plug to help with detonation under high boost.
Set of 6 included
Our new Compatibility checking feature is still being updated and revised. If you have questions about vehicle fitment, please contact us.
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