NGK Ruthenium HX Spark Plug Box of 4 (LKAR7AHX-S)

When it's time to replace the spark plugs on many modern vehicles, you want something that's going to ignite fuel more completely and last a good long while. These NGK Ruthenium HX spark plugs are built with advanced technology to do just that. They feature a patented Ruthenium alloy center electrode and a platinum ground electrode, designed to concentrate spark energy and ensure a more thorough fuel burn.

This improved combustion can lead to a quicker throttle response, a smoother idle, and better performance when the engine is cold. The pure alumina silicate ceramic insulator helps with heat transfer and provides superior strength, while the trivalent metal plating resists corrosion and seizing. You'll find these plugs fit a wide range of vehicles, including many models from Acura, Honda, Infiniti, Lexus, Mazda, Nissan, and Toyota.

NGK also includes corrugated ribs on the insulator to prevent flashover, and a copper core to help with heat removal. It's a well-built plug designed for today's engines that demand high ignitability.