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NGK Nickel Spark Plug
6421 BM7F
Item #: BM7F
Manufacturer: NGK
7.9500
EACH
NGK 6421 BM7F Nickel Spark Plug
NGK standard plugs are constructed for longer life and optimum performance.
- 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
| Shell | |
| Thread Diameter | 14mm |
| Thread Pitch | 1.25mm |
| Seat Type | Tapered |
| Reach | 9.5mm (3/8") |
| Hex Size | 5/8" (16mm) |
| Terminal Type | Removable Nut |
| Overall Height | Bantam |
| Gap | .028" (0.7mm) |
| Center Electrode | |
| Material | Nickel |
| Type | Standard |
| Size | 2.5mm |
| Projection | Non-Projected |
| Ground Electrode | |
| Material | Nickel |
| Type | Standard |
| Shape | |
| Quantity | 1 |
| Specifications | |
| Resistor | Yes |
| Resistor Value | 1k Ohm |
| Heat Range | 7 |
| Torque Specs | Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft. |
| Longevity | 30k Miles |