NGK Laser Iridium Spark Plug Box of 4 (DILFR6J11)

The center electrode on these NGK Laser Iridium spark plugs is tipped with an iridium alloy, which is about six times harder than platinum. This material choice is key to their durability and ability to maintain a consistent spark, even in high-performance engines. They are designed as direct OE replacements, meaning they are built to the same high standards as the plugs that came on your vehicle from the factory. You'll find these fit a range of cars, including models like the Acura ILX, Honda Civic, and Volvo S60.

NGK uses a pure alumina ceramic insulator that's strong and helps transfer heat away from the plug's tip, preventing overheating. For easier installation and to prevent seizing, the metal plating on the plug body is a trivalent type, offering good corrosion resistance. The copper core inside also aids in heat removal, and triple seals are used to ensure there are no leaks. These features work together to provide reliable starts and a stable spark, which can make a noticeable difference in how your engine runs.