CSF Cooling 8355 Perf Auxiliary Radiator for F87 M2 N55/F3X 340i/440i/F2X M240i

F87 M2 (N55) / F3X 340i/440i / F2X M240i High-Performance Auxiliary Radiator The new CSF Auxiliary Radiators are a great addition to the popular F87 (N55) & F3X/F2X Cooling Suites. Like the other cooling systems on these BMWs, the aux rads do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners keep pushing the limits of their M2s and Gen 1 B58s, CSF is here to keep them cool. Sold Individually - most applications use 2 auxiliary radiators Multi-Fit - Fits Both Left & Right Side 2-Row - 42mm High-Performance Core Featuring CSF's Exclusive B-tube Technology New "Track-Spec" 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact and Heat Dissipation Tank Volume and Core Size Increased