NGK Laser Iridium Leading Spark Plugs (RE7C-L)

When it's time to replace the spark plugs on your Mazda RX-8, especially if you're looking to maintain that signature rotary engine performance, NGK Laser Iridium plugs are a solid choice. These are the actual OE-equivalent plugs, meaning they're designed to meet or exceed the original equipment specifications for your specific rotary engine.

What sets these plugs apart is the iridium-tipped center electrode, which is significantly harder than platinum, offering excellent durability and a consistently stable spark. This is crucial for the unique combustion cycle of a rotary. The pure alumina ceramic insulator helps manage heat effectively, and the copper core further aids in heat removal, preventing the plug from overheating. For distributorless ignition systems, like those found in many modern vehicles, the platinum pad on the ground electrode ensures even wear over time.

You'll also find trivalent metal plating on these plugs, which helps prevent corrosion and makes them easier to remove down the road. NGK also uses triple seals to prevent any leakage, ensuring everything stays contained where it should be.