HKS M45 Super Fire Iridium Spark Plugs 4 Pack Compatible with 2008-15 Mitsubishi Evolution X

Built for High-Load & Tuned Engines – Reliable ignition and reduced carbon fouling under extreme conditions. 0.6mm Iridium Center Electrode – Concentrated spark energy for strong, consistent ignition and long service life. Platinum-Tipped Ground Electrode – Enhanced durability with anti-vibration design for high-RPM performance. Anti-Fouling Technology – Thermal Edge + Spark Support Gap help reduce carbon buildup and misfires. M45XL Specs – XL Type NGK #9 Heat Range Equivalent 12mm x 26.5mm Thread 16mm Hex Sold Individually.

The HKS Super Fire Racing M-Series spark plug is engineered for enthusiasts who demand consistent ignition under high boost, lean mixtures, and high cylinder pressures. The M-Series “Ultimate spark plug ‘M’” reinforces ignition performance, durability, and resistance to insulation/carbons—making it a strong choice for both tuned engines and hard-driven street setups. Key Technology 0.6mm Iridium Alloy Center Electrode: reduces voltage requirement and supports stable ignition performance and longevity. Platinum Chip Ground Electrode: increases durability and maintains consistent spark performance over time. Short-Type / Anti-Vibration Ground Electrode: improved resistance against vibration-related wear in demanding conditions. Thermal Edge + Spark Support Gap: helps reduce carbon buildup that can lead to misfires after extended idling or varied combustion conditions. Specs (M45XL / 50003-M45XL) Heat Range: HKS 45 (NGK #9 equivalent) Type: XL Type Thread Size: 12mm x 26.5mm Hex/Wrench Size: 16mm Quantity: Sold individually (purchase quantity required for your engine) Fitment note: Confirm thread/reach and heat range match your engine and tune before purchase/installation.