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Old 11-17-2010, 11:02 AM   #10
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eakins's Avatar
Joined: May 2002
Location: Fort Collins, Colorado
Oddometer: 19,403
Originally Posted by SkunkWizard
I know NGK is the "Go Too" but the P/N for Denso Iridium's from the Denso site is #IU31

(Denso's have been a personal preference of mine because of my experience with road racing)
denso does make a better irdium plug because the hold the patent for the original .4mm tip size. ngk and others need to use a larger tip and smaller is better.
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