The HKS Super Fire Racing M45i is an ISO-type iridium spark plug with an NGK 9 equivalent heat range, for tuned Japanese turbo and naturally aspirated engines (RB, SR, VG, Z32, and similar) using an ISO φ14 seat. The 0.6 mm iridium center electrode and platinum-chip outer electrode lower firing voltage for strong ignition under high boost or lean conditions, with thermal-edge anti-fouling. Sold individually.
Specifications
| Brand | HKS |
| Product Line | Super Fire Racing M-Series |
| Heat Range | NGK 9 equivalent |
| Seat / Type | ISO type |
| Thread | φ14 x 19 mm |
| Hex (Wrench) | 16 mm |
| Center Electrode | 0.6 mm iridium |
| Quantity | Single plug |
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