NGK Iridium IX Spark Plug Box of 4 (CR8EIX)

NGK is known for making reliable ignition components, and their Iridium IX spark plugs are a solid choice for many vehicles. These plugs are designed to give you a more consistent spark, which can lead to better acceleration, improved fuel efficiency, and longer life compared to standard plugs. They fit a wide range of ATVs, motorcycles, and even some cars, making them a popular upgrade.

The key to the Iridium IX's performance is its fine iridium tip. Iridium is a very hard metal, six times harder than platinum, and it has a very high melting point. This means the electrode can be made much finer, requiring less voltage to jump the gap and creating a stronger spark. This advanced design also helps prevent fouling, so you can expect reliable performance even in demanding conditions. The trivalent metal plating on the plug body helps resist corrosion and makes it easier to install and remove without seizing.

This is a box of four spark plugs, which is what many multi-cylinder engines will need. If you're looking to get the most out of your engine's ignition system, these NGK Iridium IX plugs are a well-built option.