Should I Gap Ngk Iridium Spark Plugs?

In most cases your Iridium Power plugs do not need to be gapped. ... Should you decide to re-gap your Iridium Power plug, use extreme caution as improper gapping may damage or destroy the Iridium center electrode or porcelain center.

Are NGK Iridium plugs pre-gapped?

While most NGK spark plugs are pre-gapped, there are occasions when the gap requires adjustment. Care must be taken to avoid bending or breaking off the fine-wire electrodes. ... NGK also recommends adjusting the gap no more than +/- 0.008” from the factory preset gap.

What are NGK iridium spark plugs gapped at?

In most cases, the gaps should be in the regions of 0.028 to 0.06 inches.