CSF high‑performance aluminum radiator for E46 3‑Series and Z4 applications combines a 2‑row core with B‑Tube technology and multi‑louvered fins to maximize airflow and heat rejection. This drop‑in replacement uses CNC‑machined OE‑style brackets and matching inlet/outlet connections for easy install. If clearance issues occur, mount the radiator as far forward as possible and check engine mounts to avoid rubbing under load.
CSF 99-06 BMW 323i / 99-05 BMW 325i / 99-06 BMW 328i / 99-05 BMW 330i / 03-05 BMW Z4 Radiator