- Overall performance of NGK Iridium IX spark plugs. 
- Optimized compressions. 
- More HP & Torque. 
- Linear accelerations.
- Energy Loss Reduction (Brass head module / Iridium center electrode / platinum chip). 
- Lifetime of 100,000 km (5 times the classic plugs). 
- Optimization of the ignition / Reduced misfires. 
- Less emissions / exhaust gases. 
- Better fuel economy with a much more stable ignition (Double alloy Iridium / Platinum). 
- New body Alloy, much more resistant to corrosion. 
- Enhanced ground electrode with platinum chip. 
- Stable Idle / Less Vibrations. 
- Easier starts, even on cold and humid weather. 
- Ensuring a stable ignition for long term.