NGK’s IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast.

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.
• Thread Size – 14 mm.
• Hex Size – 5/8 in. (16 mm.).
• Reach – 19 mm. (3/4 in. ).
• Seat Type – Gasket.
• Gap – 0.032 in. (0.8 mm.).
• Heat Range – 8.
• Terminal Type – Solid.
• Resistor – Yes.
• Overall Height – ISO.
• Thread Pitch – 1.25 mm.
• Center Electrode.
• 4 per box.
• Type – Fine Wire.
• Center Electrode Material – Iridium.
• Center Electrode Size – 0.6 mm.
• Center Electrode Projection – Projected.
• Ground Electrode Type – Taper Cut.
• Ground Electrode Material – Nickel.