NGK Iridium Racing Spark Plug Box of 4 (R7437-8) — High Performance Ignition

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SKU: NGK4901
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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 NGK

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

Watch in action

Unleash Peak Performance with NGK Iridium Racing Spark Plugs

Engineered for the most demanding racing conditions, NGK Iridium Racing Spark Plugs are the ultimate choice for drivers who push their vehicles to the limit. These plugs are designed to withstand extreme temperatures and pressures, ensuring reliable ignition and maximum power output when you need it most.

Superior Iridium Construction

Featuring a fine-wire iridium center electrode, these spark plugs offer exceptional ignitability and a long service life. The iridium material provides superior durability and resistance to wear, ensuring consistent performance lap after lap.

Key Features & Benefits:

  • Extreme Durability: Built to withstand the harsh realities of racing.
  • Enhanced Ignitability: Fine-wire iridium electrode ensures a strong, consistent spark.
  • Wide Heat Range: Available in various heat ranges to suit diverse racing applications.
  • Optimized Design: Special electrode configurations for maximum durability and ignitability.
  • Proven Performance: Trusted by champions worldwide for their reliability and power delivery.

Whether you're competing on the track or seeking the ultimate performance upgrade for your streetcar, NGK Iridium Racing Spark Plugs deliver the power and reliability you demand. Experience the difference that cutting-edge ignition technology makes.

Upgrade your ignition system with NGK Racing spark plugs from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About NGK

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

Watch in action

Unleash Peak Performance with NGK Iridium Racing Spark Plugs

Engineered for the most demanding racing conditions, NGK Iridium Racing Spark Plugs are the ultimate choice for drivers who push their vehicles to the limit. These plugs are designed to withstand extreme temperatures and pressures, ensuring reliable ignition and maximum power output when you need it most.

Superior Iridium Construction

Featuring a fine-wire iridium center electrode, these spark plugs offer exceptional ignitability and a long service life. The iridium material provides superior durability and resistance to wear, ensuring consistent performance lap after lap.

Key Features & Benefits:

  • Extreme Durability: Built to withstand the harsh realities of racing.
  • Enhanced Ignitability: Fine-wire iridium electrode ensures a strong, consistent spark.
  • Wide Heat Range: Available in various heat ranges to suit diverse racing applications.
  • Optimized Design: Special electrode configurations for maximum durability and ignitability.
  • Proven Performance: Trusted by champions worldwide for their reliability and power delivery.

Whether you're competing on the track or seeking the ultimate performance upgrade for your streetcar, NGK Iridium Racing Spark Plugs deliver the power and reliability you demand. Experience the difference that cutting-edge ignition technology makes.

Upgrade your ignition system with NGK Racing spark plugs from GGCRACING.

Product Details

Product Description

About NGK

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

Watch in action

Unleash Peak Performance with NGK Iridium Racing Spark Plugs

Engineered for the most demanding racing conditions, NGK Iridium Racing Spark Plugs are the ultimate choice for drivers who push their vehicles to the limit. These plugs are designed to withstand extreme temperatures and pressures, ensuring reliable ignition and maximum power output when you need it most.

Superior Iridium Construction

Featuring a fine-wire iridium center electrode, these spark plugs offer exceptional ignitability and a long service life. The iridium material provides superior durability and resistance to wear, ensuring consistent performance lap after lap.

Key Features & Benefits:

  • Extreme Durability: Built to withstand the harsh realities of racing.
  • Enhanced Ignitability: Fine-wire iridium electrode ensures a strong, consistent spark.
  • Wide Heat Range: Available in various heat ranges to suit diverse racing applications.
  • Optimized Design: Special electrode configurations for maximum durability and ignitability.
  • Proven Performance: Trusted by champions worldwide for their reliability and power delivery.

Whether you're competing on the track or seeking the ultimate performance upgrade for your streetcar, NGK Iridium Racing Spark Plugs deliver the power and reliability you demand. Experience the difference that cutting-edge ignition technology makes.

Upgrade your ignition system with NGK Racing spark plugs from GGCRACING.

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