CSF Radiator for WRX/STI 2-Row Aluminum Core with B-Tube Technology

CSF Radiator for WRX/STI — 2-Row Aluminum Core with B-Tube Technology Keep your WRX/STI running cooler, longer. CSF's high-performance all-aluminum radiator is engineered for street and track use, offering reliable cooling for high-horsepower builds and motorsports applications. Key Features 2-row aluminum core for increased heat rejection in a compact package. B-Tube Technology — specially formed "B" shaped tubes brazed at the seam for greater strength and thinner walls, delivering improved thermal efficiency versus conventional "O" tubes. ~15% more tube surface area increases heat transfer, effectively giving the performance of two smaller tubes in the same space. Dual liquid laminar flow for smoother coolant movement and better temperature control under load. Multi-louvered fins precisely aligned and wind-tunnel tested to maximize airflow and heat rejection. Lightweight, durable construction ideal for track and daily-driven performance cars. Why Choose CSF With over five decades of radiator engineering, CSF combines advanced materials and rigorous testing to deliver superior cooling performance and longevity. This radiator is a direct upgrade for WRX/STI owners seeking consistent operating temperatures, improved engine reliability, and enhanced performance in demanding conditions.