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8 Plugs of NGK Iridium IX Spark Plugs CR9EIX/3521

8 Plugs of NGK Iridium IX Spark Plugs CR9EIX/3521

You Are Purchasing 8 NGK Spark Plugs

  • Shell
  • Thread Diameter 10mm
  • Thread Pitch 1.0mm
  • Seat Type Gasket
  • Reach 19mm (3/4")
  • Hex Size 5/8" (16mm)
  • Terminal Type Removable Nut
  • Overall Height ISO
  • Gap .031" (0.8mm)
  • Center Electrode
  • Material Iridium
  • Type Fine Wire
  • Size 0.6mm
  • Projection Non-Projected
  • Ground Electrode
  • Material Nickel
  • Type Standard
  • Shape Taper Cut
  • Quantity 1
  • Specifications
  • Resistor Yes
  • Resistor Value 5k Ohm
  • Heat Range 9
  • Torque Specs Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft
  • Longevity 50k Miles

NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. A 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.

  • 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