The CSF high-performance all-aluminum radiator for Audi B8 S4 and S5 is built to improve cooling for street and track use. It uses a 2-row core with CSF's exclusive B-tube technology and multi-louvered fins to increase heat-transfer area and airflow. CNC-machined brackets and OE-style quick-connect inlet/outlet make it a true drop-in replacement. A plate-style transmission oil cooler is integrated into the left tank and is pre-plugged for manual applications.
CSF Audi B8 S4 & S5 High Performance All-Aluminum Radiator