CSF Racing Radiator Subaru WRX 2008-2021 / STI 2008-2021

With over 50 years of radiator manufacturing expertise, CSF stands as a leader in the industry. For peak engine performance and optimal operation of your WRX/STI, the CSF High-Performance All-Aluminum Radiator stands out as the ultimate choice. Engineered to excel on both streets and tracks, this performance radiator is indispensable for high-horsepower builds and race vehicles requiring enhanced cooling in motorsport settings.

Featuring a 2-Row core with CSF's exclusive B-Tube Technology, this radiator sets a new standard. Unlike conventional oval-shaped "O" type radiator tubes, CSF employs specially engineered "B-tubes" that are brazed over the seam for superior strength and sealing. This innovative design allows the use of thinner and lighter aluminum material, enhancing cooling efficiency while ensuring durability. The inlet in the middle of the tube, combined with seam brazing, increases heat transfer surface area by approximately 15%, offering the efficiency of dual liquid laminar flow.

Additionally, CSF integrates ultra-efficient multi-louvered fins precisely aligned to maximize airflow through each radiator core. Fin specifications are meticulously measured and tested in the wind-tunnel lab for maximum heat rejection efficiency.

The CSF WRX/STI radiator boasts a true "Drop-in fit" design, requiring no modifications for installation. OE-style brackets are CNC machined and welded for unparalleled durability, while Inlet/Outlet connections match OE standards for seamless compatibility with OEM hoses or aftermarket alternatives.

Trust the expertise of CSF for the highest-performing, top-quality, and most dependable radiators on the market. Optimize your engine's cooling performance with CSF and experience unrivaled reliability and efficiency.