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Denso U-Groove Spark Plug

$7.23 inc GST ($5.28 )

U-Groove Ground Electrode design gives the flame a groove to grow in, resulting in less flame dissipation and a larger flame front for a more complete combustion. This translates to better fuel efficiency and improved throttle response.

  • Machine Rolled Threads prevent seizing or cross threading during installation and removal
  • 100% pre-fired to assure the highest quality possible
  • Purified alumina powder Insulator provides exceptional strength and thermal conductivity
  • Five rib insulator prevents Flashover
  • Copper-glass seal bonds Center Electrode and insulator for a gas-tight seal