NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines.
 
Shell
Thread Diameter 14mm
Thread Pitch 1.25mm
Seat Type Gasket
Reach 26.5mm (1.04")
Hex Size 5/8" (16mm)
Terminal Type Solid
Overall Height ISO
Gap .031" (0.8mm)
Center Electrode Material Iridium
Type Fine Wire
Size 0.6mm
Projection Projected
Ground Electrode Material Nickel
Type Standard
Shape Taper Cut
Quantity 1
 
Specifications
Resistor Yes
Resistor Value 5k Ohm
Heat Range 7
 
Torque Specs
Cast Iron: 18-25.3 lb. ft.
Aluminum: 18-21.6 lb. ft.