MSD Ignition 37434 Spark Plug, 4 Pack (5IR6Y ) - Product Features
- MSD's proprietary ceramic formula provides the highest dielectric strength
- Yttrium ground electrode reduces the chance of pre-ignition
- Iridium tip improves cold starts
- Warranty not applicable for this product
MSD Ignition 37154 Spark Plug, 4 Pack (2IR5L) - Product Features
- MSD's proprietary ceramic formula provides the highest dielectric strength
- Yttrium ground electrode reduces the chance of pre-ignition
- Iridium tip improves cold starts