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CSF auxiliary radiators for BMW F8X platforms (F8X M3/M4 and M2 Competition) are 100% all‑aluminum drop‑in upgrades that increase core size and tank volume for improved cooling under track and aggressive driving. The two‑row 42mm core uses CSF's B‑Tube technology to maximize airflow and heat dissipation, includes OEM quick‑connect fittings, integrated bolt‑on rock guards, and a satin black finish for an OEM+ appearance.
CSF BMW F8X M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Sold Individually - Fits Left and Right
