NGK Iridium IX Spark Plug 4 Pack
Iridium IX spark plugs designed for performance enthusiasts with durable, stable spark and improved throttle response. Customers note easy installation, pre-gapped design, and smoother engine operation
Highlights
- iridium IX for extreme ignitability
- tapered ground electrode reduces quenching
- pre-gapped convenience
Pros
- high ignitability
- durable iridium tip
- pre-gapped design
- improved throttle response
- stable spark
Cons
- longevity mixed reviews
Best For
Features
- Iridium IX design for high ignitability and durable performance
- 0.6 mm laser-welded fine Iridium tip for stable spark
- Tapered ground electrode minimizes electrical quenching effects
- Long insulator with corrugated ribs to reduce flashover
- Triple gasket seal to prevent combustion gas leakage
