NGK #6664
Fine Iridium tip ensures high durability and a consistently stable spark
Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance...
NGK #5791
Lowers ignition system voltage requirements
Greater ignitability and performance over conventional spark plugs
Trivalent Metal Plating has superior anti-corrosion and anti-seizing...
NGK #5766
Laser welded Iridium center electrode tip
Platinum disc welded to backside of ground electrode provides long life
Trivalent Metal Plating for superior anti-corrosion and...