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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


  • Thread Size: 14mm
  • Thread Pitch: 1.25mm
  • Seat Type: Gasket
  • Reach: 19mm (3/4″)
  • Hex Size: 13/16″ (21mm)
  • Terminal Type: Solid
  • Overall Height: JIS
  • Gap: .031″ (0.8mm)

Center Electrode

  • Material: Nickel
  • Type: Standard
  • Size: 2.5mm
  • Projection: Extended Projection

Ground Electrode

  • Material: Nickel
  • Type: U-Groove
  • Quantity: 1


  • Warranty: 12 Months
  • Torque Specs: Cast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.
  • Heat Range: 20
  • Longevity: 20-30k Miles
  • Resistor: No

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