NGK BR6HIX Iridium IX Spark Plug – 3419
The NGK BR6HIX is an Iridium IX spark plug designed for reliable ignition and long life. The fine-wire iridium centre electrode needs less voltage to spark. This helps cold starts, smoother idle, and cleaner combustion. It also resists fouling in stop-start use and at low speeds.
Suitable for many small two-stroke and four-stroke engines that use a 14 mm, gasket-seat plug with 12.7 mm reach and NGK heat range 6. Please use the vehicle lookup to confirm fitment or check the Vehicle Fitment tab.
- Fine-wire iridium tip for strong spark and better throttle response
- Resistor design to reduce electrical noise (helps with ECU and electronics)
- Nickel ground electrode with tapered cut for stable ignition
| Part Number | BR6HIX |
| NGK Stock Number | 3419 |
| GTIN | 087295134191 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Reach (thread length) | 12.7 mm (1/2 in) |
| Hex Size | 20.8 mm (13/16 in) |
| Seat Type | Flat seat with gasket |
| Heat Range | 6 (NGK scale) |
| Resistor | Yes |
| Centre Electrode | Iridium, fine wire ~0.6 mm |
| Ground Electrode | Nickel alloy, tapered cut |
| Projected Tip | No |
| Terminal Type | Solid terminal |
| Factory Gap | 0.8 mm (0.032 in) |
Installation Notes
– Check and set the gap to the engine maker’s spec. Avoid forcing the fine-wire tip.
– Fit with a new gasket. Tighten to the correct torque for a 14 mm gasket-seat plug.
– Compare dimensions with your original plug before installation.
The price displayed is for a single plug, please add the desired amount to your basket.


