NGK Iridium IX Spark Plug 7397 4-PAK TR5IX
NGK Iridium IX Spark Plug #7397 4-PACK #41-TR5IX
- Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.
- Fine-tipped iridium-center electrode ensures high durability and consistently stable spark
- Iridium alloy with an extremely high melting point
- Tapered ground electrode maximizes fuel burn
- Outstanding acceleration, high fuel efficiency and durability
- Ultimate design, technology and performance