CSF’s drop-in auxiliary radiator boosts cooling for BMW F87/F3X/F2X applications. The 2-row 42 mm high-efficiency core with B-Tube tech and 5 mm fins increases capacity and delays heat soak. All-aluminum, 100% TIG-welded tanks with an integrated mounting frame use OEM quick connections; multi-fit left/right design with detachable rock guard.

CSF 8355 High-Performance Auxiliary Radiator Features:

• For 2016-2018 BMW M2 (F87, N55)
• For 2016-2018 BMW 340i/340i xDrive; 2017-2019 340i GT xDrive
• For 2017-2020 BMW 440i/440i xDrive/Gran Coupe/xDrive Gran Coupe
• For 2017-2020 BMW 430i/430i xDrive/Gran Coupe/xDrive Gran Coupe
• For 2017-2021 BMW M240i/M240i xDrive
• 2-row 42 mm core, B-Tube, 5 mm multi-louvered fins
• All-aluminum TIG-welded; OEM quick-connects; multi-fit L/R; detachable rock guard

CSF 8355 High-Performance Auxiliary Radiator Notes:

• Some F3X 340i/440i and F2X M240i/M140i trims lack auxiliary radiator; verify VIN and cooler count before ordering
• Drop-in for BMW 17-11-8-625-447; can replace 17-11-7-628-057 and 17-11-7-600-697 with correct lower brackets
• Cars not equipped with 17-11-8-625-447 may require minor air-duct trimming; M Sport/M Sport Brakes should use 17-11-8-625-447 (verify by VIN)
• Upper brackets are the same for all versions; use lower brackets 51-74-7-389-931 (LH) and 51-74-7-389-932 (RH); frame 17-21-8-625-445 not required (integrated)