NGK Iridium Spark Plug Features:

• 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