Precision Ignition. Laser-Fine Iridium Performance.
The NGK IMR9B-9H Laser Iridium Spark Plug delivers a consistently stable spark, outstanding acceleration, and exceptional fuel efficiency — all backed by NGK’s laser-welded fine iridium tip technology. Engineered for high-performance powersports applications, it reduces voltage requirements and extends ignition system life well beyond conventional plugs.
Key Features
- Fine iridium tip — laser-welded for high durability and a consistently stable spark
- Ultra-small-diameter center electrode — reduces voltage requirement and extends ignition system life
- Trivalent metal plating — superior anti-corrosion and anti-seizing for easy removal
- Enhanced metal shell plating — additional anti-corrosion protection
- Outstanding acceleration, improved fuel efficiency, and long service life
Specifications
- Part Number: IMR9B-9H
- Series: Laser Iridium
- Brand: NGK Spark Plugs
- SKU: 4888
- Heat Range: 9
- Electrode Material: Iridium
- Gap: 0.9mm








