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.
Best Yttrium Stabilized Zirconia
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.
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.
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.
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.
Bosch 7900 Copper with Nickel Spark Plug (Pack of 1)
- Tapered, v-profile nickel chromium ground electrode for improved cold starts and fuel ignitability.
- Heavy-duty, yttrium enhanced copper core center electrode for reliability and performance.
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.
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.
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.