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About Denso U-Groove Standard Spark Plug

Denso U-Groove Standard Spark Plug

  • Six times harder than platinum, iridium doesnt melt in temperatures up to 4,000F
  • Because the iridium electrodes of these plugs can be shrunk to only 0. 4mm, voltage requirements decrease while firing performance improves
  • 360 laser welding of electrode provides a seal that resists wear even in the worst conditions
  • Ground electrode features a tapered cut and U-groove that form a large volume area for the flames center.

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