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NGK Laser Iridium spark plugs provide superior ignitability and long service life. Fine wire iridium tipped center electrode and fine wire platinum tipped ground electrode ensures slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions.

Trivalent metal plating provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage.


Thread Diameter 14mm

Thread Pitch 1.25mm

Seat Type Gasket

Reach 26.5mm (1.04")

Hex Size 5/8" (16mm)

Terminal Type Solid

Gap .035" (0.9mm)

Center Electrode Material Iridium

Type Fine Wire

Size 0.6mm

Projection Projected Ground Electrode

Material Platinum

Type Fine Wire

Quantity 1



Resistor Yes

Resistor Value 5k

Ohm Heat Range 7


Torque Specs

Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.


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