MX-5 Iridium Spark Plugs (NA/NB/NC)

From our real life experience, the NGK have always been the go-to spark plugs brand. Great performance and longevity, both with standard and iridium versions.

All NGK iridium electrode spark plugs use trivalent metal plating for superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover while pure alumina silicate ceramic insulator, provides better strength and heat transfer. Copper core aids in heat removal and triple seals prevent leakage.

NGK BKR6EIX-11 (3764)
NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today’s high-tech, high performance engines.

Torque Specs:
Cast Iron: 24-33 Nm (18-25.3 lb-ft)
Aluminum: 24-28 Nm (18-21.6 lb-ft)

NGK ILTR6A-13G (3789) / NGK TR5AI-13 (90813)
NGK Laser Iridium long life spark plugs with fine wire iridium tipped center electrode and fine wire platinum tipped ground electrode ensures slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions.

Torque Specs:
Cast Iron: 14-24 Nm (10.8-18 lb-ft)
Aluminum: 9-20 Nm (7.2-14.5 lb-ft)

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