SKU: 3580064317

CSF High-Performance Radiator - A9X Supra & BMW G-Series

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Description

CSF High-Performance Radiator - A9X Supra & BMW G-SeriesCSF is well known for making the best A9X Supra and BMW G Series cooling systems on the market. Naturally, they have been most successful with the B58 crowd. With years of feedback from Customers, Race Teams, and Development Partners, CSF has more B58 cooling experience than any other company in the world. With more and more people pushing the limits of the Supra, the factory radiator has started showing its limitations. Bigger turbos cranking out

CSF is well known for making the best A9X Supra and BMW G-Series cooling systems on the market. Naturally, they have been most successful with the B58 crowd. With years of feedback from Customers, Race Teams, and Development Partners, CSF has more B58 cooling experience than any other company in the world.

With more and more people pushing the limits of the Supra, the factory radiator has started showing its limitations. Bigger turbos cranking out more power create a lot more heat that needs to be dissipated. Furthermore, the heat exchanger is mounted directly in front of the radiator, so all the heat shed by the charge air system runs over it. In racing applications this can be detrimental to engine coolant temperatures and risk sending your Supra into limp mode. In addition, many of these cars are getting to an age where wear and tear necessitates replacement.  

CSF began development of the Supra radiator over 1 year ago with thorough race testing done by Titan Motorsports and Studio RSR. To give customers the best possible performance, CSF incorporated its latest 5mm fin cooling technology. This new fin technology increases the heat transfer area over a traditional radiator by 20-25%.

CSF vs OEM
The original OE radiator from Toyota/BMW is a plastic tank with a single row aluminum core design. While this is generally accepted as good quality and durable, there is always room for improvement. The 4mm fins on the OE radiator made the system fairly efficient for a factory unit. The core itself is one of the biggest limiting factors at only 34mm thick and a single cooling row.

With data collected by development partners and race teams, CSF was able to design the ideal High-Performance replacement. The CSF radiator features the latest 5mm fin technology. These fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while still maintaining good airflow. The core is much larger than the factory featuring 2-Row 42mm aluminum core. This both increases the fluid capacity of the radiator, and improves the cores ability to dissipate heat. CSF’s Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. In addition, the super-efficient multi-louvered fins maximize airflow through the core for the best possible performance.


Feature CSF OEM
# Core Rows 2 1
# Cooling Tubes 69 81
# Cooling Fin Rows 70 82
Fin Height 5mm 4mm
Core Thickness 42mm 34mm
Core Material Aluminum Aluminum
Tank Material Aluminum Plastic
Construction 100% TIG Welded Crimp on Gasket



Real World Testing
CSF understands that this radiator will be used in motorsport competitions. While it would have been easy to engineer a good radiator and call it a day, CSF wanted to make the best possible radiator that would hold up under the most demanding conditions. This requires more development time with a lot more testing, but the result is the ultimate performance radiator you can depend on. CSF worked closely with two R&D Partners to test the radiators in multiple motorsport environments. These initial test units were made using CSF’s 42mm 2-Row core with 6.5mm fins.

Drag & Roll Racing
Titan Motorsports was the perfect partner to test the radiator for drag racing applications. CSF has a long relationship with the team at Titan Motorsports. They have one of the fastest A90 Supras in the world and compete in drag and roll racing competitions across the US. Over the past year, the Supra has been run in countless competitions in some of the hottest and harshest environmental conditions. Over the past year, the radiator has performed very well offering lower engine temps at both idle and during runs.

A9X Supra & BMW G-Series High-Performance Radiator Features (CSF #7226)

  • 2-Row, 42mm Ultra-High-Performance Core
  • Cooling Tubes with CSF’s Exclusive B-Tube Technology
  • New 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact
  • CNC Machined Mounting Brackets and OEM Style Inlet/Outlet
  • 100% All Aluminum TIG-Welded Construction
  • 1-Hour “Mirror Finish” Hand Polish
  • True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications
  • Individually Leak and Pressure Tested
  • 2-Year Limited Warranty
  • Applications:
    • 2020+ Toyota A90/A91 GR Supra
    • 2019+ BMW Z4 (2.0L & 3.0L)
    • 2019+ BMW G2X 330i & 330e (incl. xDrive)
  • Replaces OEM Part Numbers:
    • Toyota: 16400-WAA01
    • BMW: 17-11-8-666-739 / 17 11 8 666 739 / 17118666739
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3580064317

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Reviewed in the United States on May 31, 2026
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Parks N' Tech
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Reviewed in the United States on June 3, 2026
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Mylittlechacha
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Reviewed in the United States on June 12, 2026
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Amazon Customer
Massapequa, US
★★★★★ 5
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Reviewed in the United States on June 13, 2026
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Dionne
Dallas, US
★★★★★ 3
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Reviewed in the United States on June 10, 2026

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