Best Ignition Electrode

MSD Ignition 37224 Spark Plug, 4 Pack (6IR5Y)

  • MSD's proprietary ceramic formula provides the highest dielectric strength.
  • Yttrium ground electrode reduces the chance of pre-ignition.
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MSD Ignition 37114 Spark Plug, 4 Pack (1IR4Y)

  • MSD's proprietary ceramic formula provides the highest dielectric strength.
  • Yttrium ground electrode reduces the chance of pre-ignition.
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Bosch Automotive (7722) Silver Spark Plug - Single

  • Specifically engineered for older European performance cars, as well as some motorcycle applications.
  • Silver alloy center electrode tipĀ ensures long service life and ignition sparks with increased energy.
  • Ribbed insulator design prevents misfires due to flash-over.
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NGK 5422 Spark Plug - BR8ES, 4 Pack

  • Designed to operate over a much wider heat range than ordinary plugs.
  • High alumina ceramics for better heat transfer and electrical insulation.
  • Solid copper core and nickel tipped electrode provide a longer plus life.
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Autolite XP5325 Iridium XP Spark Plug, Pack of 1

  • Iridium-enhanced 0.6mm finewire design for optimal durability and performance.
  • V-trimmed ground electrode for improved ignitability.
  • Platinum protected ground wire for maximum efficiency in all ignition types.
  • Better overall ignitability and optimum performance.
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4 Autolite Spark Plugs #3923

  • Iridium-enhanced 0.6mm finewire design for optimal durability and performance.
  • V-trimmed ground electrode for improved ignitability.
  • Platinum protected ground wire for maximum efficiency in all ignition types.
  • Better overall ignitability and optimum performance.
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Autolite XP104 Iridium XP Spark Plug

  • Iridium-enhanced 0.6mm finewire design for optimal durability and performance.
  • V-trimmed ground electrode for improved ignitability.
  • Platinum protected ground wire for maximum efficiency in all ignition types.
  • Better overall ignitability and optimum performance.
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Spark Plug, Motorcycle/Snowmobile, BR9ES

  • Designed to operate over a much wider heat range than ordinary plugs.
  • High alumina ceramics for better heat transfer and electrical insulation.
  • Solid copper core and nickel tipped electrode provide a longer plus life.
  • Patented triple gasket sealing process eliminates the possibility of combustion gas leakage.
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Autolite 3924 Spark Plug Copper Core (Quantity 12)

  • Electrode Tip Material: Resistor, Reach: 3/4 in, Resistor: Suppressor, Seat Type: Gasket..
  • Thread Diameter: 14 mm, Tip Configuration: Power, Wrench Diameter: 5/8 in..
  • Power tip extends further into the combustion chamber to aid in self-cleaning, reducing fouling at low rpms and pre-ignition at high speeds..
  • Traditional nickel electrodes. Copper core improves resistance to fouling..
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Bosch Automotive (FR8DS) Silver Spark Plug - Pack of 10

  • The center electrode tip is made from a silver alloy, ensuring long service life and ignition sparks with increased energy.
  • Engineered for older European performance cars, as well as some motorcycle applications.
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