NGK Iridium IX spark plugs are designed specifically for the performance enthusiast. Iridium IX spark plugs offer extreme ignitibility, improved throttle response and superior anti-fouling. The fine-wire iridium center electrode ensures high durability and a consistently stable spark. A special taper-cut ground electrode shape allows more area for faster flame expansion. Iridium alloy has an extremely high melting point, perfect for today's high-performance engines. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.

• Fine wire Iridium center electrode ensures high durability and a consistently stable spark
• Iridium alloy has an extremely high melting point, perfect for today's high-performance engines
• Trivalent metal plating has superior anti-corrosion and anti-seizing properties
• Special taper-cut ground electrode shape to allow for more area for flame expansion 
• Center Electrode Core Material: Copper Core
• Center Electrode Tip Material: Iridium
• Gap Size: 0.044 in
• Ground Electrode Tip Design: Taper Cut
• Hex Size: 5/8-inch
• Manuf. Heat Range: 5
• Reach: 26/5 mm
• Seat Type: Gasket
• Approx. Resistor Value: 5K OHM
• Thread Diameter: 14 mm

Shipping Note: Shipping to Alaska, Hawaii, and PO Boxes is not available for this item

Warranty: 90 Day Woot Limited Warranty