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Trusted Brand Csf 08-21 Subaru Wrx/sti 2-row 42mm Race-spec All Aluminum Radiator - Black Save Big: 65% Off [hUYj1wJ2]

$55.99 $179.99 -69%

CSF 08-21 Subaru WRX/STI Radiator Upgrade The CSF 08-21 Subaru WRX/STI 2-Row 42mm Race-Spec All Aluminum Radiator is the ultimate choice for enhancing the cooling performance of your vehicle. With over 5 decades of experience in radiator manufacturin

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Trusted Brand Csf 08-21 Subaru Wrx/sti 2-row 42mm Race-spec All Aluminum Radiator - Black Save Big: 65% Off [hUYj1wJ2]

CSF 08-21 Subaru WRX/STI Radiator Upgrade

The CSF 08-21 Subaru WRX/STI 2-Row 42mm Race-Spec All Aluminum Radiator is the ultimate choice for enhancing the cooling performance of your vehicle. With over 5 decades of experience in radiator manufacturing, CSF brings you a high-performance radiator that is designed to excel both on the street and at the track. This radiator is a must-have for high horsepower builds and race vehicles that require exceptional cooling efficiency in motorsports environments.

Advanced Cooling Technology

This radiator features a 2-Row core with CSF's exclusive B-Tube Technology, which sets it apart from traditional radiators. The B-tubes are specially engineered in the shape of a "B" and carefully brazed over the seam, making them stronger and lighter than regular "O" shape tubes. This design increases the heat transfer surface area of the tubes by approximately 15% compared to regular tubes, providing the efficiency of two smaller tubes within the same space. The B-tubes also allow for "dual liquid laminar flow," further optimizing cooling performance.

Maximum Cooling Efficiency

In addition to the B-Tube Technology, this radiator incorporates ultra-efficient multi-louvered fins that are meticulously aligned to maximize airflow through each core. The fin specifications are carefully measured and calculated for each application, ensuring maximum heat rejection efficiency. CSF has tested these radiators in a wind-tunnel lab to guarantee optimal performance under various conditions. This radiator is the perfect upgrade for Subaru WRX/STI models from 2008 to 2021, including the Base, Limited, and Premium trims.

What Our Customers Say

January 28, 2026

Absolutely no complaints!

A superb piece of work. I love it.

- Quintina W..

January 28, 2026

Absolutely no complaints!

It’s a very well-made and handy tool.

- Hereward D..

January 28, 2026

Absolutely no complaints!

It’s an investment I’m glad I made.

- Briony S..

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