hks50003-M45HL-1
The HKS Super Fire Racing M‑Series spark plug is a high‑performance iridium spark plug designed for tuned or high‑load engines, offering improved durability and ignition performance over many stock plugs.
Iridium alloy center electrode:
Durable and reliable under high combustion loads with a high melting point (~2454 °C).
Improves ignition performance and longevity compared to standard plugs.
Platinum chip outer electrode:
Enhances durability and consistent spark gap life.
Short, anti‑vibration outer electrode:
Helps resist mechanical vibration and wear at high RPMs.
Thermal Edge & Spark Support Gap:
Ceramic insulator features to help reduce carbon buildup and maintain combustion efficiency.
| Specification | Detail |
|---|---|
| Part Number | 50003‑M45HL |
| Series | HKS Super Fire Racing – M‑Series |
| Heat Range | Equivalent to NGK #9 (colder plug for higher performance/tuned engines) |
| Thread Size | 12 mm × 26.5 mm |
| Wrench Size | 14 mm |
| Electrodes | Iridium center / Platinum ground |
| Sold | Individually (each plug) |
