NGK standard plugs are constructed for longer life and optimum performance.
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 Diameter 14mm
- Thread Pitch 1.25mm
- Seat Type:Â Gasket
- Reach 12.7mm (1/2″)
- Hex Size 13/16″ (21mm)
- Terminal Type:Â Removable Nut
- Overall Height:Â JIS
- Gap .028″ (0.7mm)
Center Electrode
- Material Nickel
- Type Standard
- Size 2.5mm
Specifications
- Resistor:Yes
- Resistor Value:Â 5k Ohm
- Heat Range:Â 5
- Torque Specs Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft








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