HKS

HKS Super Fire Racing M40LF Iridium Spark Plug — Performance Ignition Upgrade

HKS Super Fire Racing M40LF Iridium Spark Plug — Performance Ignition Upgrade
HKS Super Fire Racing M40LF Iridium Spark Plug — Performance Ignition Upgrade
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HKS Super Fire Racing M40LF Iridium Spark Plug — Performance Ignition UpgradeHKS Super Fire Racing M40LF Iridium Spark Plug — Performance Ignition Upgrade
HKS

HKS Super Fire Racing M40LF Iridium Spark Plug — Performance Ignition Upgrade

SKU: HKS50003-M40LF
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About HKS HKS engineers high-quality automotive parts and accessories trusted ...Read More

Price:
$315.00
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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
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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.

Elevate Engine Performance with HKS M40LF

The HKS Super Fire Racing M40LF spark plug is engineered for enthusiasts demanding peak ignition efficiency. Designed to handle high-boost applications and increased cylinder pressures, these plugs feature a high-grade iridium center electrode that ensures a stable, powerful spark under extreme conditions. Whether you are hitting the track or upgrading your daily driver, the M40LF provides the reliability and performance consistency required for high-performance tuning.

Key Technical Features

  • 0.6mm Iridium alloy center electrode for superior ignitability
  • Outer electrode with platinum chip for enhanced durability
  • Thermal edge design to prevent carbon buildup and fouling
  • Tapered ground electrode for improved flame propagation
  • Optimized heat range for high-output engine configurations

By upgrading to HKS Super Fire Racing plugs, you reduce the risk of misfires during high-RPM operation, ensuring your engine reaches its full potential. The advanced materials used in the M40LF construction offer exceptional resistance to wear, extending service intervals even in modified engines. Experience smoother idling and crisper throttle response with this premium ignition component. Find your next performance upgrade 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.

Elevate Engine Performance with HKS M40LF

The HKS Super Fire Racing M40LF spark plug is engineered for enthusiasts demanding peak ignition efficiency. Designed to handle high-boost applications and increased cylinder pressures, these plugs feature a high-grade iridium center electrode that ensures a stable, powerful spark under extreme conditions. Whether you are hitting the track or upgrading your daily driver, the M40LF provides the reliability and performance consistency required for high-performance tuning.

Key Technical Features

  • 0.6mm Iridium alloy center electrode for superior ignitability
  • Outer electrode with platinum chip for enhanced durability
  • Thermal edge design to prevent carbon buildup and fouling
  • Tapered ground electrode for improved flame propagation
  • Optimized heat range for high-output engine configurations

By upgrading to HKS Super Fire Racing plugs, you reduce the risk of misfires during high-RPM operation, ensuring your engine reaches its full potential. The advanced materials used in the M40LF construction offer exceptional resistance to wear, extending service intervals even in modified engines. Experience smoother idling and crisper throttle response with this premium ignition component. Find your next performance upgrade 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.

Elevate Engine Performance with HKS M40LF

The HKS Super Fire Racing M40LF spark plug is engineered for enthusiasts demanding peak ignition efficiency. Designed to handle high-boost applications and increased cylinder pressures, these plugs feature a high-grade iridium center electrode that ensures a stable, powerful spark under extreme conditions. Whether you are hitting the track or upgrading your daily driver, the M40LF provides the reliability and performance consistency required for high-performance tuning.

Key Technical Features

  • 0.6mm Iridium alloy center electrode for superior ignitability
  • Outer electrode with platinum chip for enhanced durability
  • Thermal edge design to prevent carbon buildup and fouling
  • Tapered ground electrode for improved flame propagation
  • Optimized heat range for high-output engine configurations

By upgrading to HKS Super Fire Racing plugs, you reduce the risk of misfires during high-RPM operation, ensuring your engine reaches its full potential. The advanced materials used in the M40LF construction offer exceptional resistance to wear, extending service intervals even in modified engines. Experience smoother idling and crisper throttle response with this premium ignition component. Find your next performance upgrade at GGCRACING.

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