Description
Whether you’re tuning a high-revving engine or pushing through variable load conditions, spark plug thermal characteristics matter—get the heat range wrong and you’ll either foul plugs or trigger detonation. The NGK MR8AI9 balances a wide operating window with proven reliability, making it the practical choice for serious builders and racers who can’t afford ignition inconsistencies. This isn’t a one-trick plug; it’s engineered to handle the thermal swings that come with performance modifications.
- High alumina ceramic core
- Superior heat dissipation
- Deep-seated copper core
- Wide heat range capability
- Nickel alloy tip
- Extended electrode life
- Reduces fouling risk
- Prevents preignition issues
- MPN: 7692
- Versatile operating range
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