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4 Plugs of NGK Laser Iridium Spark Plugs KR8AI/5477

4 Plugs of NGK Laser Iridium Spark Plugs KR8AI/5477

You Are Purchasing 4 NGK Spark Plugs

  • Brand:NGK Spark Plugs
  • Manufacturer's Part Number:KR8AI
  • Part Type:Spark Plugs
  • Product Line:NGK Laser Iridium Spark Plugs
  • Shorty Spark Plug:No
  • Resistor:Yes
  • Manufacturer Heat Range:8
  • Electrode Tip Material:Iridium
  • Electrode Core Material:Copper
  • Center Electrode Type:Projected
  • Spark Plug Thread Size:12mm
  • Spark Plug Reach:0.750 in.
  • Spark Plug Seat Style:Gasket
  • Wrench Diameter:5/8 in.
  • Ground Strap Quantity:One


NGK Laser Iridium spark plugs feature laser-welded technology. Lasers are used to pinpoint precision welds, reducing excess debris; this decreases the required voltage to bridge the spark gap. An iridium disc is welded on the center electrode and a platinum disc is welded on the ground electrode, reducing the wear rate of both surfaces and ensuring great durability and long life. These spark plugs are available for use with a variety of engine types.