NGK HEMI Iridium Spark Plugs for Stock to High Output Applications
NGK Header

NGK HEMI Iridium Spark Plugs


Please Verify Fitment Before Ordering

(Some Engines Require Different Heat Ranges)



NGK V-Power Iridium
Race Plug
HEMI Only


Features:

  • 10lbs+ Hi-Boost Applications
  • 200HP+ N.O.S. Applications
  • Two Heat Ranges Colder
  • Race Spark Plug


NGK V-Power Iridium
Race Plug
HEMI Only


Features:

  • 6-10lbs Of Boost Applications
  • 75-175HP N.O.S. Applications
  • One Heat Range Colder
  • Race Spark Plug


NGK V-Power Iridium
Spark Plug
HEMI Only


Features:

  • Good Stock Replacement
  • 35-55HP N.O.S. Applications
  • Standard Heat Range
  • Race Spark Plug

NGK Iridium Spark Plugs

It may be time to invest in precious metal futures. NGK Iridium Spark Plugs represent the ultimate evolution of spark plug technology and performance. Iridium allows for a center electrode 75 percent the size of a platinum electrode and 24 percent the size of a conventional nickel electrode.


The fine electrode tip is engineered for greater ignition. And it's in the design of the iridium tip that makes Iridium IX a better spark plug. The electrode is not too thin and not too thick. It's just the right size to reduce the voltage required for spark and to maximize the overall longer life qualities of iridium.


Why should you run a cold plug on supercharged and N.O.S. applications? What is a Cold plug? Click-here

NGK Iridium Spark Plugs Feature:

  • Higher Melting Point Than Platinum
  • Anti-Oxidation and Anti-Erosion
  • Improved Ignition
  • Superior Anti-Fouling
  • Lower Required Voltage
  • Metal Shell Plating
NGK Iridium Spark Plugs