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

Shell

• Thread Diameter14mm
• Thread Pitch1.25mm
• Seat TypeGasket
• Reach19mm (3/4")
• Hex Size5/8" (16mm)
• Terminal TypeSolid
• Overall HeightISO
• Gap.043" (1.1mm)

Center Electrode

• MaterialIridium
• TypeFine Wire
• Size0.6mm
• ProjectionProjected

Ground Electrode

• MaterialPlatinum
• TypeStandard
• ShapeTaper Cut
• Quantity1

Specifications

• ResistorYes
• Resistor Value5k Ohm
• Heat Range6
• Torque SpecsCast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

(1) Spark plug

Instructions 

Dimensions:

Resister type

5/8" Hex

3/4" Thread reach

1/2" Thread diameter

Projecting insulator type