NGK Iridium IX Spark Plugs for Harley
The ultimate in spark plug technology and performance.
Iridium electrode is smaller than a standard electrode; requires less voltage.
Hotter spark and extended spark plug service life compared to conventional plugs.
Exceeds OEM specifications for plug service life.
Sold in pairs
Fitment: Harley Davidson Twin Cam engines from 1999-2016 and Sportsters from 86-16