NGK Single Iridium Spark Plug Box of 4 (ZNAR6AIX-11)

NGK is well-known for making reliable ignition components, and their Iridium IX spark plugs are a great example of that. If you're looking to get a bit more out of your engine, whether it's a modified setup or just an upgrade over standard plugs, these are worth considering. They're designed to provide a strong, consistent spark that helps with acceleration, fuel efficiency, and overall engine durability.

What sets these plugs apart is the fine iridium tip. Iridium is a very hard metal with a high melting point, making it ideal for the high temperatures inside modern engines. This fine tip helps ensure a strong spark every time, which can lead to improved starting, smoother idling, and a more responsive throttle. The plugs also have a tapered cut ground electrode, which further aids in starting and idling performance. Plus, they come with a trivalent metal plating that helps prevent corrosion and makes them easier to remove down the road.

This set includes four spark plugs, which is what many V6 and V8 engines require. They fit a range of vehicles, including models like the Ford Expedition, Lincoln Navigator, and Mercury Mountaineer, among others. If your current plugs are due for a change or you're looking for an improved spark, these NGK Iridium IX plugs are a solid option.