NGK CR9EKB Standard Spark Plug
- Copper core, dual ground electrodes
- M14x1.25 thread
- 20k-30k mile rating
- Zinc dipped shell, triple gasket seal
- Pack of 1
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A standard copper-core spark plug with two ground electrodes, sold singly. The listing gives a thread size but no gap or reach, so check the application.
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ASIN: B001RLS29WModel: 2305Category: Spark Plugs
Overview
Swapping a worn plug is the job of this NGK standard plug. It has a copper core, a ceramic insulator made of pure alumina silicate, dual ground electrodes and a zinc dipped shell.
It is a conventional plug with a long insulator nose meant to reduce fouling. Only one plug comes per pack, and the heat range and gap are not given.
Who it's for
Vehicles that call for this standard part number and an ordinary service interval. Owners who need a long-life plug, or a full set in one pack, should look at other NGK listings.
Pros and cons
- Copper core for conductivity
- Two ground electrodes
- Corrosion-resistant zinc dipped shell
- Triple gasket seal
- Sold as a single plug
- Gap size not stated
- Shorter life than iridium
Performance notes
The copper core carries heat away from the tip, and a longer insulator nose reduces fouling. The corrugated ribs on the insulator reduce flashover, and two ground electrodes keep the spark consistent.
Specifications
| Brand | NGK |
|---|---|
| Model | 2305 |
| Dimensions & fit | |
| Thread size | M14x1.25 |
| Construction & materials | |
| Core material | Copper |
| Top material | Metal |
| Compatibility & installation | |
| Vehicle type | Car, Truck |
| Other details | |
| Ground electrodes | Dual |
| Replaces | 77039093000, 94702-00403, 94709-00403, 12 12 7 710 636, 4302, XS4302 |
| Mileage rating | 20k-30k miles |
| Fit type | Vehicle Specific Fit |
Frequently asked questions
Does the NGK CR9EKB fit every M14 engine?
No. The listing gives the thread size but not the reach, hex size or heat range, so match the part number to your engine rather than the thread alone.
How long does the NGK CR9EKB last?
The listing rates it for 20k-30k miles.
Is the CR9EKB a set of plugs?
No. The included component is a pack of 1.