NGK Plug Analysis Chart |
| Plug Code | Reference |
| B | Diameter is 14mm |
| R | Resistor Plug (Noise Suppression) |
| 9 | Heat Range (Hot) |
| 10 | Heat Range (Middle) |
| 11 | Heat Range (Cold) |
| E | Reach 19mm (3/4") |
| G | Fine wire - nickle alloy - center electrode |
| GV | Gold Palladium- center electrode - Racing use |
| V | Fine wire - Gold Palladium - Center electrode |
| VX | High performance Platnium |
