NGK Ruthenium HX Spark Plug Box of 4 (LTR5AHX)

When you're looking to get the most out of your modern engine, especially if it demands high ignitability, a fresh set of spark plugs can make a big difference. These NGK Ruthenium HX spark plugs are built with advanced technology to help your engine run smoother and more efficiently. They are designed to provide a more complete fuel burn, which can lead to a quicker throttle response, a smoother idle, and better performance when starting up in cold weather.

What sets these plugs apart is the patented Ruthenium alloy used in the center electrode. This material is known for its exceptional durability, offering a longer service life compared to standard plugs. The Double Fine Electrode (DFE) design helps concentrate the spark energy, igniting a wider range of air-fuel mixtures, which is beneficial whether your engine is running rich or lean. The pure alumina silicate ceramic insulator provides solid strength and helps manage heat effectively, while the trivalent metal plating on the exterior helps prevent corrosion and seizing, making installation and future removal easier. These plugs fit a wide range of vehicles, including many from Chevrolet, Ford, and Buick.