NGK (2707) BR9ECMIX Iridium IX Spark Plug, Pack of 1, One Size
- Iridium core, 0.6mm laser welded fine tip
- 14mm thread
- 40k-60k mile rating
- Pack of 1
- Triple gasket seal
- 0.05 kg
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A single iridium spark plug with a fine laser welded tip, sold by the plug rather than in a set. Order enough for every cylinder because only one comes in the pack.
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ASIN: B001RLRXX8Model: BR9ECMIXCategory: Spark Plugs
Overview
Not a standard copper plug, this NGK Iridium IX has a fine laser welded iridium tip and a tapered ground electrode. A longer insulator with corrugated ribs and a triple gasket seal are meant to stop combustion gas leaks.
NGK describes it as made for performance enthusiasts, with strong ignitability and a longer service life from the iridium tip. The shopper's watch-out is quantity: one plug per order.
Who it's for
Drivers of cars and trucks that call for this plug and want a longer-lasting tip. Owners buying for a whole engine have to multiply the order, and those who need a different heat range should check the part number.
Pros and cons
- Fine iridium tip resists wear
- Tapered ground electrode
- Triple gasket seal
- Trivalent metal plating resists corrosion
- Sold as a single plug
- Gap size not listed
- Heat range not stated
Performance notes
The thin iridium tip lowers the voltage needed to fire, which helps ignitability and throttle response, and iridium's high melting point resists wear. The tapered ground electrode limits quenching of the flame kernel, and the sealed shell stops gas escaping.
Where it stands among spark plugs
- #2 most-searched brand and model of the 32 spark plugs lines we track (by search demand, not sales).
From the specs of the 15 spark plugs we list; not a test result.
Specifications
| Model | BR9ECMIX |
|---|---|
| Dimensions & fit | |
| Thread size | 14mm |
| Tip diameter | 0.6mm |
| Weight | 0.05 kg |
| Construction & materials | |
| Core material | Iridium |
| Top material | Metal |
| Compatibility & installation | |
| Vehicle type | Car, Truck |
| Other details | |
| Replaces | 92070-0016, 51539093000, 4144, 5392, IWM27, W27EMR-ZU |
| Mileage rating | 40k-60k miles |
| Fit type | Vehicle Specific Fit |
Frequently asked questions
Does the NGK BR9ECMIX come as a set?
No. The listing says pack of 1, so you need one for each cylinder.
Which plugs does the BR9ECMIX replace?
The listing gives cross-references including 92070-0016, 51539093000, 4144, 5392, IWM27 and W27EMR-ZU.
How long should an NGK Iridium IX last?
The listing rates it for 40k-60k miles.