NGK Laser Iridium Spark Plug Box of 4 (ITR4A15)

NGK is well-known for making reliable ignition components, and their Laser Iridium spark plugs are a popular choice for vehicles needing a long-lasting, high-performance plug. These are designed as an OE equivalent replacement, meaning they meet the same standards as the plugs your car came with from the factory. They are built to provide a stable spark and resist wear, helping your engine run smoothly and efficiently.

What sets these apart is the iridium alloy used for the fine wire center electrode. Iridium has a very high melting point, which makes it incredibly durable and resistant to erosion, even in modern, high-tech engines. This durability translates to a longer service life compared to standard platinum plugs. The pure alumina silicate ceramic insulator offers great strength and helps manage heat, while the trivalent metal plating on the exterior helps prevent corrosion and seizing, making them easier to remove down the road. For vehicles originally equipped with fine wire iridium plugs, these are the recommended replacement.

This box contains four spark plugs, enough for most 4-cylinder engines. They fit a wide range of vehicles, including many Buick, Chevrolet, and GMC models from the late 80s through the 2010s. Always check the fitment guide to confirm they are the right plugs for your specific car.