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CSF

CSF Performance Auto Transmission Cooler 21+ BMW G8X

CSF Performance Auto Transmission Cooler 21+ BMW G8X

Regular price $599.00 USD
Regular price Sale price $599.00 USD
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If you're looking to keep your BMW G8X M3 or M4's transmission running cool, the CSF Radiators part number 8221 is worth considering. This high-performance automatic transmission cooler is designed specifically for those who push their vehicles to the limit, whether on the street or the track. With a notable increase in cooling efficiency—around 30%—you can drive with peace of mind, knowing that your transmission won’t overheat under pressure.


  • Dual-Core Design: This cooler features a robust dual-core setup that enhances heat dissipation.
  • Drop-in Fit: Installation is straightforward and requires no modifications.
  • Compatibility: Can be paired with CSF's High-Performance Heat Exchanger (CSF #8215) or the OEM cooling system.
  • Warranty: Comes with a 2-year limited warranty for added peace of mind.
  • Performance Ready: Ideal for road racing, drag racing, and vehicles with enhanced performance or transmission tuning.
  • Core Volume: Offers a 194% increase in core and tank volume compared to OEM parts.
  • Fluid Capacity: 94% more fluid capacity (CSF 1700ml vs. OEM 875ml) ensures better cooling.
  • Core Thickness: Two 22mm stacked cores provide a thickness of 44mm, compared to the OEM's 28mm.
  • Row Count: Rear cooler features 16 rows, surpassing the OEM's 14 rows, while the front cooler adds an additional 16 rows.
  • Advanced Technology: Made using CSF's AC Condenser Technology, featuring a 1-row super-high pressure 16mm 9-channel microtube for optimal oil flow.
  • Optimal Airflow: Utilizes OEM top and bottom rubber seals for effective airflow.
  • Quick Connect: Designed with OEM style "quick connect" inlet and outlet connections for easy installation.


  • Core Material: Aluminum
  • Core Row Quantity: 2
  • Electric Fan: No
  • Finish Color: Black
  • Installation Type: Drop-in fit installation
  • Thickness: 44mm


Many customers have noted how easy the installation was, with one reviewer stating, "I was pleasantly surprised by how straightforward the drop-in fit was. My M4 runs cooler than ever!" Others have commented on the noticeable difference in performance during spirited driving, with one enthusiast saying, "I can finally push my car without worrying about overheating. This cooler is a game changer!"


Products Fitment:

  • BMW M2 2024
  • BMW M3 2021-2024
  • BMW M4 2021-2024