Denso Iridium Spark Plug 3426
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Denso Iridium Spark Plug 3426

Notes: Long life. SIP (Super Ignition Plug)



Part #3426
NotesLong life, SIP (Super Ignition Plug)
Ground Electrode DesignNeedle to Needle
Seat StyleGasket
Metal TypeIridium
Gap - Factory Preset1.1 mm = 0.044 in
Electrical Terminal TypeNon-Removable Nut
Center Electrode DesignFine Wire
Insulator TypeNon-Projected
Short StyleNo
Center Electrode Core MaterialCopper
Thread Size14 mm
Drive Size13/16 in
Ground Electrode ConfigurationSingle
Center Electrode Tip MaterialIridium
Ground Electrode Core MaterialNickel Alloy
Insulator MaterialCeramic
Resistance (Ω)5
Ground Electrode Tip MaterialPlatinum
Manufacturer Heat Range Number20
Package Quantity1


Manufactured to OEM quality standards.

  • checkmarkOE style iridium with iridium alloy center electrode (90% Ir) & platinum ground strap
  • checkmarkIncludes original equipment super ignition plug (Sip) design applications which feature a fine wire iridium center electrode with a needle tip platinum ground electrode
  • checkmarkDENSO patented optimized iridium-rhodium alloy formula: highest concentration of iridium vs competitors for greater durability
  • checkmarkDENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode