NGK Ruthenium HX Spark Plug Box of 4 (FR5AHX)

NGK is known for making reliable ignition components, and their Ruthenium HX spark plugs are a great example of their advanced technology. These plugs are built with a patented Ruthenium alloy center electrode and a platinum fine wire ground electrode, designed to handle the demands of modern engines. They fit a wide range of vehicles, including many Chrysler, Dodge, and Honda models, offering an improved burn for quicker throttle response, smoother idling, and better cold starts.

The unique Double Fine Electrode (DFE) design on these NGK plugs helps concentrate spark energy, igniting a wider range of air-fuel mixtures. This means you can expect better performance whether your engine is running a bit rich or lean. The pure alumina silicate ceramic insulator provides excellent strength and heat transfer, while the trivalent metal plating helps prevent corrosion and seizing, making installation and removal easier down the road. A copper core is also included to help dissipate heat effectively.