CSF 08-21 Subaru WRX/STI 2-Row 42mm Race-Spec All Aluminum Radiator - Black

CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your WRX/STI 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.

This Part Fits:

Year	Make	Model	Submodel
2016-2017	Subaru	Crosstrek	Base
2016	Subaru	Crosstrek	Hybrid
2016	Subaru	Crosstrek	Hybrid Touring
2016-2017	Subaru	Crosstrek	Limited
2016-2017	Subaru	Crosstrek	Premium
2009-2013	Subaru	Forester	X
2009-2013	Subaru	Forester	X Premium
2012-2016	Subaru	Impreza	Base
2012-2016	Subaru	Impreza	Limited
2012-2016	Subaru	Impreza	Premium
2012-2016	Subaru	Impreza	Sport Limited
2012-2016	Subaru	Impreza	Sport Premium
2008-2014	Subaru	Impreza	WRX
2008-2014	Subaru	Impreza	WRX STI
2006-2009	Subaru	Legacy	2.5i
2005-2006	Subaru	Legacy	GT
2005,2007-2009	Subaru	Legacy	GT Limited
2006-2009	Subaru	Legacy	GT spec.B
2005	Subaru	Legacy	i
2005	Subaru	Legacy	Limited
2006-2009	Subaru	Outback	2.5i
2007	Subaru	Outback	2.5i Basic
2006	Subaru	Outback	2.5i Limited
2008	Subaru	Outback	Base
2005	Subaru	Outback	i
2005	Subaru	Outback	Limited
2005-2006	Subaru	Outback	XT
2005-2009	Subaru	Outback	XT Limited
2015-2021	Subaru	WRX	Base
2015-2021	Subaru	WRX	Limited
2015-2021	Subaru	WRX	Premium
2015-2021	Subaru	WRX STI	Base
2015	Subaru	WRX STI	Launch Edition
2015-2021	Subaru	WRX STI	Limited
2019	Subaru	WRX STI	S209
2016	Subaru	WRX STI	Series.HyperBlue
2018	Subaru	WRX STI	Type RA