HKS Super Fire Racing M45i Iridium Spark Plug — Premium Ignition Upgrade

SKU: HKS50003-M45I
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Sale price$283.50
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About HKS

HKS engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full HKS lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Superior Ignition with HKS M45i

The HKS Super Fire Racing M45i spark plug represents the pinnacle of ignition technology for high-performance engines. Designed to meet the rigorous demands of racing and high-output street tuning, the M45i features a specialized iridium center electrode that delivers a focused, powerful spark. This ensures that your fuel mixture ignites completely and efficiently, resulting in improved power output and smoother engine operation throughout the entire power band.

Why Choose the M45i?

  • High-grade 0.6mm iridium center electrode
  • Platinum-tipped ground electrode for maximum longevity
  • Advanced heat dissipation to prevent pre-ignition
  • Excellent resistance to fouling and carbon buildup
  • Engineered for high-performance and modified engines

When every millisecond counts, the HKS M45i provides the reliability and consistency that performance enthusiasts demand. Its robust design is capable of handling the increased cylinder pressures found in high-boost or high-compression setups, making it a favorite among tuners worldwide. By improving the efficiency of the combustion process, you not only gain performance but also ensure the long-term health of your engine. Choose HKS for your next ignition upgrade and feel the difference in your vehicle's performance. Shop the full range of HKS parts at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About HKS

HKS engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full HKS lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Superior Ignition with HKS M45i

The HKS Super Fire Racing M45i spark plug represents the pinnacle of ignition technology for high-performance engines. Designed to meet the rigorous demands of racing and high-output street tuning, the M45i features a specialized iridium center electrode that delivers a focused, powerful spark. This ensures that your fuel mixture ignites completely and efficiently, resulting in improved power output and smoother engine operation throughout the entire power band.

Why Choose the M45i?

  • High-grade 0.6mm iridium center electrode
  • Platinum-tipped ground electrode for maximum longevity
  • Advanced heat dissipation to prevent pre-ignition
  • Excellent resistance to fouling and carbon buildup
  • Engineered for high-performance and modified engines

When every millisecond counts, the HKS M45i provides the reliability and consistency that performance enthusiasts demand. Its robust design is capable of handling the increased cylinder pressures found in high-boost or high-compression setups, making it a favorite among tuners worldwide. By improving the efficiency of the combustion process, you not only gain performance but also ensure the long-term health of your engine. Choose HKS for your next ignition upgrade and feel the difference in your vehicle's performance. Shop the full range of HKS parts at GGCRACING.

Product Details

Product Description

About HKS

HKS engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full HKS lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Superior Ignition with HKS M45i

The HKS Super Fire Racing M45i spark plug represents the pinnacle of ignition technology for high-performance engines. Designed to meet the rigorous demands of racing and high-output street tuning, the M45i features a specialized iridium center electrode that delivers a focused, powerful spark. This ensures that your fuel mixture ignites completely and efficiently, resulting in improved power output and smoother engine operation throughout the entire power band.

Why Choose the M45i?

  • High-grade 0.6mm iridium center electrode
  • Platinum-tipped ground electrode for maximum longevity
  • Advanced heat dissipation to prevent pre-ignition
  • Excellent resistance to fouling and carbon buildup
  • Engineered for high-performance and modified engines

When every millisecond counts, the HKS M45i provides the reliability and consistency that performance enthusiasts demand. Its robust design is capable of handling the increased cylinder pressures found in high-boost or high-compression setups, making it a favorite among tuners worldwide. By improving the efficiency of the combustion process, you not only gain performance but also ensure the long-term health of your engine. Choose HKS for your next ignition upgrade and feel the difference in your vehicle's performance. Shop the full range of HKS parts at GGCRACING.

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