NGK Iridium Spark Plug For Harley

The pinnacle of spark plug performance and technology advancement from the leading brand.

Features:

• The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode
• Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
• New metal shell plating has enhanced anti-corrosion qualities
• Thread reach 19.1 MM (3/4")
• Hex size 16 MM (5/8")
• Heat range 9
• Spark gap 0.8 MM / 0.031"
• Electrical resistance 5K OHMS
• Sold individually