HKS Super Fire Racing Spark Plug - M45HL (50003-M45HL)

The HKS M45HL is the ultimate high-performance spark plug for modern "Long Reach" cylinder heads. Engineered with an NGK Heat Range 9 equivalent, this "colder" plug is designed specifically for engines running high boost, aggressive tunes, or frequent track use where managing cylinder heat is critical to preventing engine knock and pre-ignition.

Whether you are pushing the limits of your Toyota 86/BRZ, GR Yaris, or Nissan R35 GT-R, the HKS M-Series ensures a stable, powerful spark under the most extreme conditions.

Why Upgrade to M45HL?

• Colder Heat Range (NGK #9): Ideal for modified engines that generate significantly more heat than stock, protecting your engine from catastrophic detonation.

• 0.6mm Iridium Alloy Center Electrode: Requires less voltage to jump the gap, resulting in better ignition performance, sharper throttle response, and more reliable cold starts.

• Platinum Ground Electrode: Features a square platinum chip for superior durability, ensuring your spark gap remains consistent even under high-load circuit driving.

• Anti-Vibration Design: The shortened outer electrode (Anti-Vibration type) is engineered to withstand the high-frequency vibrations found in high-RPM racing engines.

• Thermal Edge Technology: The specialized ceramic insulator design helps discharge carbon buildup during idling, keeping the plug clean even in stop-start Australian traffic.

Technical Specifications

Popular Vehicle Fitment (Australia)

The M45HL is the performance-choice for:

• Toyota: 86 / GR86 (FA20 / FA24), GR Yaris (G16E-GTS), GR Corolla

• Subaru: BRZ (FA20 / FA24), WRX (2015+ FA20DIT / VAG)

• Nissan: GT-R (R35 - VR38DETT), 370Z (VQ37HR)

• Lexus: IS250, IS350 (Select GR-series engines)

Important: These plugs are sold individually. For a 4-cylinder engine (86/BRZ/Yaris), please order Quantity: 4. For a 6-cylinder engine (GT-R/370Z), please order Quantity: 6.