Denso (3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug

Denso
SKU: MIDB002FOO884
Regular Price $16.27 Sale Price Unit price: $0.00

Quick Overview

Brand Denso Model SK20HR11 Single PlugDenso # 3421Extra Long Life Iridium Plug0.7mm Fine Wire Iridium-Tipped Center ElectrodePlatinum Tipped Ground ElectrodeIridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear....
Brand Denso
Model SK20HR11

  • Single Plug
  • Denso # 3421
  • Extra Long Life Iridium Plug
  • 0.7mm Fine Wire Iridium-Tipped Center Electrode
  • Platinum Tipped Ground Electrode


  • Iridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear. This combined with a platinum tipped ground electrode, creates a spark plug that is almost impervious to wear even under extreme driving or racing conditions.

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