NGK IX Iridium Spark Plug Box of 4 (BPR5EIX-11)

NGK Iridium IX spark plugs are a solid option for anyone looking to get more out of their ignition system. These plugs are built with a fine iridium tip, which is six times harder than platinum, offering a durable and consistent spark. This design helps with improved starting, idling, and throttle response, making a noticeable difference in how your engine runs, especially in modified or high-performance applications. They are also a great upgrade over standard nickel alloy spark plugs.

The iridium alloy has a very high melting point, making it well-suited for today's higher-temperature engines. You can expect outstanding acceleration, better fuel efficiency, and increased durability from these plugs. Plus, the trivalent metal plating on the body helps resist corrosion and makes them easier to remove later on, preventing seizing. This set comes with four plugs, enough for most 4-cylinder engines or as a direct replacement for many vehicles.