NGK LKAR7BIX-11S Iridium IX Spark Plug 4 Pack
Iridium IX spark plugs designed for performance enthusiasts, offering ignitability and stable spark. Customers note improved engine responsiveness and fuel efficiency
Highlights
- iridium IX durability
- tapered ground electrode
- reduced fouling and smoother idle
Pros
- high durability iridium tip
- improved throttle response
- stable spark with reduced quenching
- longer insulator nose reduces fouling
Cons
- reports of lifespan around 12,000 miles
- some reliability concerns in customer feedback
Best For
Features
- Iridium IX tip provides high durability and stable spark
- 0.6 mm laser-welded fine Iridium tip for durability
- Tapered ground electrode minimizes electrical quenching
- Longer insulator nose helps prevent fouling
- Corrugated insulator ribs reduce flashover and seal prevents gas leakage
