NGK IX Iridium Series plugs were designed specifically for the performance enthusiast.
- Fine Wire center electrode ensures high durability and a consistently stable spark
- Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines
- Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
- Corrugated ribs prevent Flashover
- Pure alumina silicate ceramic Insulator, provides superior strength and better heat transfer
- Copper Core aids in heat removal
- Triple seals prevent leakage
Product Specs
| Part Number: | 7397 |
| Weight: | 0.10lbs |
| Center Electrode Core Material: | Copper |
| Center Electrode Design: | Fine Wire |
| Center Electrode Tip Material: | Iridium |
| Drive Size: | 5/8 in |
| Electrical Terminal Type: | Non-Removable Nut |
| Gap - Factory Preset: | 1.0 mm = 0.040 in |
| Ground Electrode Configuration: | Single |
| Ground Electrode Core Material: | Nickel Alloy |
| Ground Electrode Design: | Tapered |
| Ground Electrode Tip Material: | Nickel |
| Insulator Material: | Ceramic |
| Insulator Type: | Projected |
| Manufacturer Heat Range Number: | 5 |
| Reach (in): | 0.7079 |
| Resistance (Ω): | 5000 |
| Resistor: | Yes |
| Seat Style: | Tapered |
| Short Style: | No |
| Thread Size: | 14 mm |
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