NGK Laser Iridium/Platinum Spark Plug (LTR5BI-13)

If you're looking to replace the spark plugs on your 2006-2013 Mazda 3, these NGK Laser Iridium plugs are a solid option. They're built to be an exact OE replacement, meaning they'll fit right and function just like the originals, but with some key improvements for better performance and longer life. The fine wire center electrode is made from an iridium alloy, which has a very high melting point and helps ensure a consistent, stable spark. This is important for getting the most out of your engine's combustion.

NGK also includes a platinum pad on the ground electrode, which helps them wear more evenly, especially in modern distributorless ignition systems. The pure alumina ceramic insulator is strong and transfers heat well, preventing the plug from overheating, while the copper core further aids in heat removal. Plus, the trivalent metal plating on the threads helps resist corrosion and makes them easier to install without seizing. You get a box of four, which is exactly what you'll need for most 4-cylinder engines.