CSF BMW 2 Series (F22/F23) / BMW 3 Series (F30/F31/F34) / BMW 4 Series (F32/F33/F36) M/T Radiator

This is CSF's high-performance all-aluminum radiator, designed to keep your BMW 2 Series, 3 Series, or 4 Series engine running cool. It's a solid choice for street driving or track use, especially if you've added more power or are pushing your car hard. You get the radiator itself, which is built with CSF's advanced B-Tube technology and a dual-core design for improved heat transfer.

CSF has been making radiators for over 50 years, and this one is built to be a direct fit for your F2X or F3X BMW, meaning no modifications are needed for installation. It uses a 2-row, 42mm core with their exclusive B-tubes, which are shaped to increase the surface area for better cooling efficiency compared to standard round tubes. The radiator also features multi-louvered fins that are precisely aligned to maximize airflow. All the brackets and fittings are CNC machined for a durable, precise fit, and they're designed to accept your original hoses, AC condenser, and fan shroud, making the swap straightforward.

This radiator replaces OEM part number 17117600520 and includes a smooth satin finish and an all-aluminum race-style drain plug. It's a well-built component that CSF tests extensively to ensure maximum heat rejection, giving you confidence in your cooling system's performance.