The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX ideal for the performance enthusiast. Iridium’s extremely high melting point is perfectly suited to today’s high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability. Fine iridium tip ensures high durability and a consistently stable spark. Trivalent metal plating for superior anti-corrosion and anti-seizing properties.

NGK 7177 Iridium IX Spark Plug - UR5IX, 1 Pack

• Tapered-cut ground electrode improves ignitability and reduces quenching
• 98% pure copper core and high-grade alumina silicate ceramic insulator increases heat dissipation for reliable starts and prevents spark plug from overheating
• Cold-rolled threads to prevent cross-threading and damage to cylinder heads
• Trivalent plating eliminates need for anti-seize
• Quantity: 1 per package