Denso Iridium Power Spark Plug. It was no secret that Iridium is 6X harder then Platinum, 8X stronger and resists melting in temperatures exceeding 4,000 degree Fahrenheit. Denso Iridium spark plugs feature the world�s smallest center electrode, measuring 0.4mm in diameter. Because the majority of sparks is exposed to the air / fuel instead of the metal surface, the fuel burn is greater (0.5 increase over platinum), which ultimately improves gas mileage.
Posted by Ty young on 23rd Jun 2014
So these plugs have worked but I have fouled out every other set of plugs in this truck. I know the kenne bell blower runs rich but I am going thru plugs in less than a 1000 miles These plugs do seem to have more power than the other plug brands we tried. I am hoping that these last at least one year since the truck is only driven in the good weather months