NGK Iridium IX Spark Plug Box of 4 (DCPR7EIX)

NGK's Iridium IX spark plugs are a solid choice when you're looking to get the most out of your engine, especially if it's been modified or you're aiming for improved performance over stock. These plugs feature a fine iridium center electrode, which is known for its extreme hardness and ability to maintain a consistent spark, even in demanding conditions. This translates to better acceleration, smoother idling, and a more responsive throttle.

The design of the Iridium IX plug also helps with starting and idling thanks to a tapered ground electrode. Plus, the iridium alloy has a very high melting point, making it well-suited for the higher temperatures found in today's engines. You'll also find that the trivalent metal plating on the plug body helps resist corrosion and seizing, which can make future removal much easier.

This is a box of four plugs, which is what many common 4-cylinder engines require. If you're upgrading from standard nickel alloy plugs, you'll likely notice an improved feel in how the engine runs.