Koyo Performance Radiator — Fits 2012-2015 Honda Civic Si 2.4L (MT)

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SKU: KOYKH082661
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Sale price$464.99 Regular price$520.60
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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 Koyo

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

Watch in action

Elevate Your Civic Si's Cooling Performance

Unleash the full potential of your 2012-2015 Honda Civic Si 2.4L (MT) with the Koyo Performance Radiator. Engineered for enthusiasts and demanding drivers, this radiator (MPN: KH082661) is a direct-fit upgrade designed to significantly improve your vehicle's thermal management. Say goodbye to overheating concerns during spirited driving or track days, and experience consistent engine performance.

Precision Engineering for Optimal Heat Exchange

Koyo's expertise in cooling technology shines through in this radiator. It features a robust all-aluminum construction, offering superior heat dissipation compared to stock units. The larger core volume and optimized fin design ensure maximum cooling efficiency, protecting your engine from excessive temperatures. Installation is straightforward, utilizing factory mounting points and hose connections.

  • Direct fit for 2012-2015 Honda Civic Si 2.4L (Manual Transmission)
  • All-aluminum construction for enhanced durability and heat transfer
  • Increased core volume for superior cooling capacity
  • Ideal for street performance, track use, and forced induction applications
  • Helps maintain optimal engine operating temperatures

Invest in the Koyo Performance Radiator from GGCRACING.COM and drive with confidence, knowing your Civic Si's cooling system is ready for anything.

Vehicle Fitment

Years Make Model Trim
2012-2015 Honda Civic Si

Product Details

Product Description
Part Numbers
Sizing & Fit

About Koyo

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

Watch in action

Elevate Your Civic Si's Cooling Performance

Unleash the full potential of your 2012-2015 Honda Civic Si 2.4L (MT) with the Koyo Performance Radiator. Engineered for enthusiasts and demanding drivers, this radiator (MPN: KH082661) is a direct-fit upgrade designed to significantly improve your vehicle's thermal management. Say goodbye to overheating concerns during spirited driving or track days, and experience consistent engine performance.

Precision Engineering for Optimal Heat Exchange

Koyo's expertise in cooling technology shines through in this radiator. It features a robust all-aluminum construction, offering superior heat dissipation compared to stock units. The larger core volume and optimized fin design ensure maximum cooling efficiency, protecting your engine from excessive temperatures. Installation is straightforward, utilizing factory mounting points and hose connections.

  • Direct fit for 2012-2015 Honda Civic Si 2.4L (Manual Transmission)
  • All-aluminum construction for enhanced durability and heat transfer
  • Increased core volume for superior cooling capacity
  • Ideal for street performance, track use, and forced induction applications
  • Helps maintain optimal engine operating temperatures

Invest in the Koyo Performance Radiator from GGCRACING.COM and drive with confidence, knowing your Civic Si's cooling system is ready for anything.

Vehicle Fitment

Years Make Model Trim
2012-2015 Honda Civic Si

Product Details

Product Description

About Koyo

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

Watch in action

Elevate Your Civic Si's Cooling Performance

Unleash the full potential of your 2012-2015 Honda Civic Si 2.4L (MT) with the Koyo Performance Radiator. Engineered for enthusiasts and demanding drivers, this radiator (MPN: KH082661) is a direct-fit upgrade designed to significantly improve your vehicle's thermal management. Say goodbye to overheating concerns during spirited driving or track days, and experience consistent engine performance.

Precision Engineering for Optimal Heat Exchange

Koyo's expertise in cooling technology shines through in this radiator. It features a robust all-aluminum construction, offering superior heat dissipation compared to stock units. The larger core volume and optimized fin design ensure maximum cooling efficiency, protecting your engine from excessive temperatures. Installation is straightforward, utilizing factory mounting points and hose connections.

  • Direct fit for 2012-2015 Honda Civic Si 2.4L (Manual Transmission)
  • All-aluminum construction for enhanced durability and heat transfer
  • Increased core volume for superior cooling capacity
  • Ideal for street performance, track use, and forced induction applications
  • Helps maintain optimal engine operating temperatures

Invest in the Koyo Performance Radiator from GGCRACING.COM and drive with confidence, knowing your Civic Si's cooling system is ready for anything.

Vehicle Fitment

Years Make Model Trim
2012-2015 Honda Civic Si

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