CSF BMW G8X M3/M4/M2 High-Performance Auxiliary Radiator - Single Radiator

The CSF High-Performance Auxiliary Radiator for the BMW G8X M3/M4/M2 is a major upgrade over the factory cooling system, delivering increased strength, fluid capacity, and cooling performance. Sold individually, this radiator fits either the left or right side and is built with TIG-welded aluminum tanks that replace the fragile plastic OEM units for superior durability and heat management.

Featuring a larger 2-row, 42mm core with CSF’s exclusive B-Tube Technology and the latest 5mm fin technology, this radiator maximizes airflow, heat dissipation, and recovery. The high-efficiency design significantly increases heat exchange surface area while maintaining excellent airflow, making it an ideal choice for aggressive street builds or track-prepped G8X platforms. A true plug-and-play upgrade for those demanding more from their cooling system.