Denso Iridium TT Spark Plug 4702
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Denso Iridium TT Spark Plug 4702




Part #4702
Ground Electrode DesignTwin Tip
Seat StyleGasket
Metal TypeIridium
Gap - Factory Preset1.0 mm = 0.040 in
Electrical Terminal TypeNon-Removable Nut
Center Electrode DesignFine Wire
Insulator TypeNon-Projected
Short StyleNo
Center Electrode Core MaterialCopper
Thread Size14 mm
Drive Size5/8 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


Durability of an OE style plug combined with power & torque of high performance.

  • checkmark0.4 mm iridium center electrode, world's smallest diameter that maximizes firing potential
  • checkmark0.7 mm needle tip ground electrode, promotes higher spark energy and less heat quenching
  • checkmarkDENSO patented optimized iridium rhodium alloy formula, highest concentration of iridium versus competitors for greater durability.
  • checkmarkDENSO patented 360 degree laser welding process, ensuring exceptional quality bond and structural strength with the iridium center electrode.