🔧 NGK LTR6IX-11 Iridium Spark Plugs 6509 – Key Features
- Iridium Fine Wire Electrode – Strong, consistent spark for efficient combustion
- 1.1mm Pre-Gapped (-11) – Optimized for modern ignition systems
- Improved Throttle Response – Smoother acceleration and better drivability
- High Heat Resistance – Ideal for demanding conditions and performance use
- Long Service Life – Outlasts standard copper and platinum plugs
🚗 Compatibility
Application Specific (Common Uses Include):
- Honda / Acura engines
- Toyota / Nissan / Subaru applications
- Vehicles requiring LTR6IX-11 / 6509 specification plugs
(Always confirm fitment—because spark plugs are not a guessing game.)
Sold in packs of 6
💡 Why Choose NGK Iridium IX?
Compared to standard plugs:
- More reliable ignition performance
- Better fuel efficiency
- Reduced misfires
- Longer lifespan
Perfect for:
- Daily drivers
- Mild performance builds
- Engines requiring consistent spark under load
⚙️ Installation Notes
- Verify gap before installation
- Torque to manufacturer specifications
- Replace all plugs as a set
- Use dielectric grease for coil connections
🏁 Bottom Line
The NGK LTR6IX-11 (6509) plugs deliver exactly what your engine needs—reliable ignition, smoother performance, and long-term durability.
No drama. No misfires. Just clean, consistent spark.
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