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

CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your F2X/F3X running at its best, a CSF High-Performance All-Aluminum Radiator is the obvious choice. Designed to perform on the street or at the track, a performance radiator is a must-have for both high horsepower builds as well as race vehicles which need added cooling performance in motorsports environments. This radiator features a 2-Row core with CSF's exclusive B-Tube Technology: Unlike a regular oval shape "O" type radiator tube, CSF uses a specially engineered tube in the shape of a "B". These "B-tubes" are carefully formed and then brazed over the seam to seal. CSF is able to use thinner and lighter aluminum material (with better cooling efficiency) because this design is actually stronger than normal "O" shape tubes that are welded. The design (inlet in the middle of the tube that is seam brazed) increases the heat transfer surface area of the tubes by approximately 15% over regular tubes - producing the efficiency of two smaller tubes vs. one large tube within the same space criteria. With "B-tubes" you are able to get "dual liquid laminar flow". CSF also uses ultra efficient multi louvered fins that are carefully and precisely aligned to maximize airflow through each radiator core. Fin specifications are carefully measured and calculated for each application, and tested for maximum heat rejection efficiency in our wind-tunnel lab.The CSF F2X/F3X radiator is a true "Drop-in fit" design requiring no modifications to install. OE style brackets are all CNC machined and welded for the best durability possible. Inlet/Outlet connections are designed to match the OE connections so you can reuse OEM hoses or aftermarket. Trust the cooling experts at CSF for the best performing, highest-quality, and most reliable radiators.

This Part Fits:

Year	Make	Model	Submodel
2014-2016	BMW	228i	Base
2015-2016	BMW	228i xDrive	Base
2013-2018	BMW	320i	Base
2013-2018	BMW	320i xDrive	Base
2011-2016	BMW	328i	Base
2011-2016	BMW	328i xDrive	Base
2011-2015	BMW	335i	Base
2014-2016	BMW	335i GT xDrive	Base
2011-2015	BMW	335i xDrive	Base
2014-2016	BMW	428i	Base
2015-2016	BMW	428i Gran Coupe	Base
2014-2016	BMW	428i xDrive	Base
2015-2016	BMW	428i xDrive Gran Coupe	Base
2014-2016	BMW	435i	Base
2015-2016	BMW	435i Gran Coupe	Base
2014-2016	BMW	435i xDrive	Base
2015-2016	BMW	435i xDrive Gran Coupe	Base
2014-2017	BMW	i3	Base
2014-2017	BMW	i3	Range Extender
2014-2016	BMW	M235i	Base
2015-2016	BMW	M235i xDrive	Base