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Best Ceramic Dielectric

MSD Ignition 37244 Spark Plug, 4 Pack (7IR4Y)

  • 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 37264 Spark Plug, 4 Pack (7IR6L)

  • MSD's proprietary ceramic formula provides the highest dielectric strength.
  • Yttrium ground electrode reduces the chance of pre-ignition.
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MSD 3711 Iridium Spark Plug

  • MSD's proprietary ceramic formula provides the highest dielectric strength.
  • Yttrium ground electrode reduces the chance of pre-ignition.
  • Machined electrode increases exposure to the flame to improve combustion.
  • All spark plugs tested prior to packaging and shipping.
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MSD Ignition 37384 Spark Plug, 4 Pack (15IR4Y)

  • 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 37404 Spark Plug, 4 Pack (15IR6)

  • 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 37124 Spark Plug, 4 Pack (1IR5L)

  • 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 37154 Spark Plug, 4 Pack (2IR5L)

  • 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 37184 Spark Plug, 4 Pack (5IR4L)

  • 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 37314 Spark Plug, 4 Pack (11IR4Y)

  • 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 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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MSD 3719 Iridium Spark Plug

  • MSD's proprietary ceramic formula provides the highest dielectric strength.
  • Yttrium ground electrode reduces the chance of pre-ignition.
  • Machined electrode increases exposure to the flame to improve combustion.
  • All spark plugs tested prior to packaging and shipping.
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MSD 37194 Iridium Spark Plug, (Pack of 4)

  • MSD's proprietary ceramic formula provides the highest dielectric strength.
  • Yttrium ground electrode reduces the chance of pre-ignition.
  • Machined electrode increases exposure to the flame to improve combustion.
  • All spark plugs tested prior to packaging and shipping.
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