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
• Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
• Corrugated Ribs Prevent Flashover
• Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
• Copper Core Aids in Heat Removal
• Triple Seals Prevent Leakage

Plug Temperatures

• 7- Best designed for mildly increased boost levels such as the Z1 GT525, GT535, and GT555 Turbos
• 8- Appropriate for moderate to high boost levels applications where high pump and race fuel boost levels are used. (GT600, GT675, and GTX Series)
• 9- Should only be used for race/nitrous applications only.

Includes 6 NGK Spark Plugs

Please choose temperature range option below.