Spark Plug Denso Iridium IW01-31

$ 43.00
SKU: IW01-31
Denso iridium full race spark plug.

This is the best spark plug you will find that can be used with the standard style plug cap.

0.4mm main electrode and 0.8mm ground electrode.

Good temperature and fouling resistance.

Will actually improve low end pickup and have seen them improve idle quality.

Excellent performer in highly tuned race engines.

If you want the best then this is it.

Equivalent to a NGK 10 heat range. (#5716)