NGK Iridium IX Spark Plug Box of 4 (KR7DIX-11S)

The fine iridium tip on these NGK Iridium IX spark plugs is a key design choice, offering a durable and consistent spark. These plugs are built to handle the demands of today's engines, providing improved acceleration, better fuel efficiency, and longer life compared to standard nickel alloy plugs. They are a popular choice for drivers looking to upgrade their ignition system.

NGK uses a trivalent metal plating on the exterior of these plugs, which helps resist corrosion and makes them easier to remove later on. The iridium alloy itself has a very high melting point, making it well-suited for higher combustion temperatures. This means you can expect reliable performance and a solid spark, even in modified or performance-oriented applications. They are designed to fit a wide range of vehicles, including many Acura, Honda, and Hyundai models.