The CSF radiator features a 1-Row 31mm aluminum core that improves heat dissipation. CSF’s Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. With nearly double the number of cooling fins and tubes, the CSF Radiator will outperform the OEM unit by a significant margin. In addition, the super-efficient multi-louvered fins maximize airflow through the core for the best possible performance. The radiator mounts in the factory location and requires no modifications or cutting. - 1-Row – 31mm Ultra-High-Performance Core - Cooling Tubes with CSF’s Exclusive B-Tube Technology - 6.5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact - CNC Machined Mounting Brackets and OEM Style Inlet/Outlet - 100% All Aluminum TIG-Welded Construction - Satin Black Finish for an OEM+ Look and Feel - True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications - Two M14x1.5 Temperature Sensor Ports on left side tank (Plugs Included) - Individually Leak and Pressure Tested - 2-Year Limited Warranty

Applications: - 1984-1988 BMW E28 M5 (US and Euro) - 1984-1989 BMW E24 M635CSi - 1987-1989 BMW E24 M6

OEM Part Numbers: - BMW: 17-11-2-226-082 - BMW: 17-11-2-225-061 - BMW: 17-11-2-226-018