NGK Iridium spark plug set for NC

Super-Duper NGK Iridium spark plugs to fit the NC. These are the quite expensive plugs that Mazda specifies.

What makes them so super-duper? According to NGK: "Laser Iridium spark plugs provide superior ignitability and long service life. Smallest tip diameter available Iridium / Platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions"

So there you go. Your Miata deserves it!

Full set of four plugs. Recommended stock gap is 0.050-0.053". We recommend 0.028-0.035" for supercharged cars.