CSF Heat Exchanger for Supra/BMW B58 2-Row 68mm Core with B-Tube Technology

CSF Heat Exchanger for Supra/BMW B58 — 2-Row 68mm Core with B-Tube Technology Upgrade your cooling, protect your power. The CSF Heat Exchanger for the Supra/BMW B58 is engineered to keep charge air temperatures low, prevent limp mode, and support higher boost from upgraded turbos or performance tuning. Key Features World’s largest 2-row core — 68mm thickness for superior heat rejection compared to the OEM 1-row 25mm unit. B-Tube Technology — Advanced tube design improves thermal transfer and durability under sustained load. OEM fitment — Unique tank and tank-to-core geometry allows the larger core to fit inside the factory cooling housing. Plug-and-play installation — Incorporates OEM transmission cooler mounting points for a true drop-in replacement. Billet transmission cooler mounts & metal rock guard — Added strength and improved airflow with included protective components. Benefits Lower charge air temps, reduced heat soak, and consistent performance under track or street conditions. Ideal for vehicles with upgraded turbo systems or ECU tuning—helps maintain power and reliability while reducing the risk of limp mode. Why choose CSF? Industry-leading core design, precision fitment, and integrated protective features make this heat exchanger the best direct upgrade for B58-powered Supras and BMWs seeking reliable, high-performance cooling.