CSF Auxiliary Radiator w/ Rock Guards — Fits BMW F8X M3/M4/M2C

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SKU: CSF8258
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Sale price$449.99 Regular price$499.00
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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

Product Details

Product Description
Part Numbers
Sizing & Fit

About CSF

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

Watch in action

High-Performance Auxiliary Radiator for BMW F8X

Take control of your BMW's engine temperatures with the CSF Auxiliary Radiator. Designed specifically for the F8X M3, M4, and M2 Competition, this radiator is a massive upgrade over the restrictive OEM plastic-tank units. By replacing the weak factory mounting pod with a modular, all-aluminum design, CSF has managed to increase core size by 7% and tank volume by 10%.

Advanced Cooling Technology

  • Core: High-efficiency 2-row 42mm core
  • Technology: Exclusive CSF B-Tube technology for maximum heat dissipation
  • Construction: 100% All-Aluminum with integrated rock guards
  • Design: Modular fitment for both left and right sides
  • Durability: Replaces fragile OEM plastic mounting pods

This radiator is built for enthusiasts who demand consistent performance under high-load conditions. The high-efficiency B-Tube core maximizes surface area for airflow, while the all-aluminum construction ensures long-term durability that plastic tanks simply cannot match. Each unit includes a rock guard to protect the core from road debris, ensuring your investment stays protected during spirited driving or track days. With stronger mounting pins and brackets, this is the ultimate cooling solution for your BMW. Improve your heat management and engine reliability today with cooling upgrades from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2019-2021 BMW M2 Competition
2020 BMW M2 CS
2015-2018 BMW M3 Base
2015-2020 BMW M4 Base
2016 BMW M4 GTS
2019-2020 BMW M4 CS

Product Details

Product Description
Part Numbers
Sizing & Fit

About CSF

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

Watch in action

High-Performance Auxiliary Radiator for BMW F8X

Take control of your BMW's engine temperatures with the CSF Auxiliary Radiator. Designed specifically for the F8X M3, M4, and M2 Competition, this radiator is a massive upgrade over the restrictive OEM plastic-tank units. By replacing the weak factory mounting pod with a modular, all-aluminum design, CSF has managed to increase core size by 7% and tank volume by 10%.

Advanced Cooling Technology

  • Core: High-efficiency 2-row 42mm core
  • Technology: Exclusive CSF B-Tube technology for maximum heat dissipation
  • Construction: 100% All-Aluminum with integrated rock guards
  • Design: Modular fitment for both left and right sides
  • Durability: Replaces fragile OEM plastic mounting pods

This radiator is built for enthusiasts who demand consistent performance under high-load conditions. The high-efficiency B-Tube core maximizes surface area for airflow, while the all-aluminum construction ensures long-term durability that plastic tanks simply cannot match. Each unit includes a rock guard to protect the core from road debris, ensuring your investment stays protected during spirited driving or track days. With stronger mounting pins and brackets, this is the ultimate cooling solution for your BMW. Improve your heat management and engine reliability today with cooling upgrades from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2019-2021 BMW M2 Competition
2020 BMW M2 CS
2015-2018 BMW M3 Base
2015-2020 BMW M4 Base
2016 BMW M4 GTS
2019-2020 BMW M4 CS

Product Details

Product Description

About CSF

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

Watch in action

High-Performance Auxiliary Radiator for BMW F8X

Take control of your BMW's engine temperatures with the CSF Auxiliary Radiator. Designed specifically for the F8X M3, M4, and M2 Competition, this radiator is a massive upgrade over the restrictive OEM plastic-tank units. By replacing the weak factory mounting pod with a modular, all-aluminum design, CSF has managed to increase core size by 7% and tank volume by 10%.

Advanced Cooling Technology

  • Core: High-efficiency 2-row 42mm core
  • Technology: Exclusive CSF B-Tube technology for maximum heat dissipation
  • Construction: 100% All-Aluminum with integrated rock guards
  • Design: Modular fitment for both left and right sides
  • Durability: Replaces fragile OEM plastic mounting pods

This radiator is built for enthusiasts who demand consistent performance under high-load conditions. The high-efficiency B-Tube core maximizes surface area for airflow, while the all-aluminum construction ensures long-term durability that plastic tanks simply cannot match. Each unit includes a rock guard to protect the core from road debris, ensuring your investment stays protected during spirited driving or track days. With stronger mounting pins and brackets, this is the ultimate cooling solution for your BMW. Improve your heat management and engine reliability today with cooling upgrades from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2019-2021 BMW M2 Competition
2020 BMW M2 CS
2015-2018 BMW M3 Base
2015-2020 BMW M4 Base
2016 BMW M4 GTS
2019-2020 BMW M4 CS

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