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The CSF triple-pass radiator for 2000–2006 BMW M3 (E46) uses a Triple-Pass Flow Structure to route coolant across the core three times for lower outlet temperatures, targeting demanding street and track cooling needs. It also incorporates a 2-row core with CSF's B-Tube technology, multi-louvered fins, CNC-machined brackets and OE-style inlet/outlets for a drop-in replacement with no modifications.
CSF 00-06 BMW M3 (E46) Triple Pass Radiator
