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.
CSF manufactures the most advanced and efficient radiator in the industry for your WRX/STI. CSF uses innovative tube and fin technologies with industry-leading testing methods to maximize airflow and heat dissipation.
The CSF #7042O Cooling product is designed to be a "Drop-In Fit" application. The product will install in the OEM Location with no modifications necessary unless otherwise noted or instructions are included in the product package. Please see the manufacturer repair manual for standard installation instructions. If you do not feel confident installing this product CSF recommends taking it to a qualified installation facility.

• "Drop-in Fit" Requiring No Modifications to Install - Accepts All Attaching OEM Components Including "Quick Connect" Hoses, AC Condenser, Mounting Brackets and Fan Shroud


• Core Features an Ultra-Efficient Fin with 6.5mm Fin Height and Multi-Louvered Design for Maximum Surface Area Contact


• 2-Row 42mm Core (Dual Core) Featuring CSF's Exclusive B-Tube Technology


• CNC Machined Brackets and Fittings for Superb Fit and Durability


• CNC Machined "Quick-Connect" Inlet/Outlet Connections


• All-Aluminum Race Style Drain Plug


• 1-Hour "Mirror Finish" Hand Polish

Fitment:
2005 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2005 Subaru Legacy i
2005 Subaru Legacy Limited
2005 Subaru Outback i
2005 Subaru Outback Limited
2005 Subaru Outback XT
2005 Subaru Outback XT Limited
2006 Subaru Legacy 2.5i
2006 Subaru Legacy GT
2006 Subaru Legacy GT spec.B
2006 Subaru Outback 2.5i
2006 Subaru Outback 2.5i Limited
2006 Subaru Outback XT
2006 Subaru Outback XT Limited
2007 Subaru Legacy 2.5i
2007 Subaru Legacy 2.5i Limited
2007 Subaru Legacy 2.5i Special Edition
2007 Subaru Legacy GT Limited
2007 Subaru Legacy GT spec.B
2007 Subaru Outback 2.5i
2007 Subaru Outback 2.5i Basic
2007 Subaru Outback 2.5i Limited
2007 Subaru Outback XT Limited
2008 Subaru Impreza 2.5i
2008 Subaru Impreza Outback Sport
2008 Subaru Impreza WRX
2008 Subaru Impreza WRX STI
2008 Subaru Legacy 2.5i
2008 Subaru Legacy 2.5i Limited
2008 Subaru Legacy 2.5i Special Edition
2008 Subaru Legacy GT Limited
2008 Subaru Legacy GT spec.B
2008 Subaru Outback 2.5i
2008 Subaru Outback 2.5i L.L. Bean Edition
2008 Subaru Outback 2.5i Limited
2008 Subaru Outback 2.5i Limited L.L. Bean Edition
2008 Subaru Outback Base
2008 Subaru Outback XT Limited
2009 Subaru Forester X
2009 Subaru Forester X Premium
2009 Subaru Impreza 2.5 GT
2009 Subaru Impreza 2.5i
2009 Subaru Impreza Outback Sport
2009 Subaru Impreza WRX
2009 Subaru Impreza WRX Premium
2009 Subaru Impreza WRX STI
2009 Subaru Legacy 2.5i
2009 Subaru Legacy 2.5i Limited
2009 Subaru Legacy 2.5i Special Edition
2009 Subaru Legacy GT Limited
2009 Subaru Legacy GT spec.B
2009 Subaru Outback 2.5i
2009 Subaru Outback 2.5i Limited
2009 Subaru Outback 2.5i Special Edition
2009 Subaru Outback XT Limited
2010 Subaru Forester X
2010 Subaru Forester X Premium
2010 Subaru Impreza 2.5 GT
2010 Subaru Impreza 2.5i
2010 Subaru Impreza 2.5i Premium
2010 Subaru Impreza Outback Sport
2010 Subaru Impreza WRX
2010 Subaru Impreza WRX Limited
2010 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011 Subaru Forester X
2011 Subaru Forester X Premium
2011 Subaru Forester X Touring
2011 Subaru Impreza 2.5i
2011 Subaru Impreza 2.5i Premium
2011 Subaru Impreza Outback Sport
2011 Subaru Impreza WRX
2011 Subaru Impreza WRX Limited
2011 Subaru Impreza WRX Premium
2011 Subaru Impreza WRX STI
2011 Subaru Impreza WRX STI Limited
2012 Subaru Forester X
2012 Subaru Forester X Premium
2012 Subaru Forester X Touring
2012 Subaru Impreza Base
2012 Subaru Impreza Limited
2012 Subaru Impreza Premium
2012 Subaru Impreza Sport Limited
2012 Subaru Impreza Sport Premium
2012 Subaru Impreza WRX
2012 Subaru Impreza WRX Limited
2012 Subaru Impreza WRX Premium
2012 Subaru Impreza WRX STI
2012 Subaru Impreza WRX STI Limited
2013 Subaru Forester X
2013 Subaru Forester X Premium
2013 Subaru Forester X Touring
2013 Subaru Impreza Base
2013 Subaru Impreza Limited
2013 Subaru Impreza Premium
2013 Subaru Impreza Sport Limited
2013 Subaru Impreza Sport Premium
2013 Subaru Impreza WRX
2013 Subaru Impreza WRX Limited
2013 Subaru Impreza WRX Premium
2013 Subaru Impreza WRX STI
2013 Subaru Impreza WRX STI Limited
2014 Subaru Impreza Base
2014 Subaru Impreza Limited
2014 Subaru Impreza Premium
2014 Subaru Impreza Sport Limited
2014 Subaru Impreza Sport Premium
2014 Subaru Impreza WRX
2014 Subaru Impreza WRX Limited
2014 Subaru Impreza WRX Premium
2014 Subaru Impreza WRX STI
2014 Subaru Impreza WRX STI Limited
2015 Subaru Impreza Base
2015 Subaru Impreza Limited
2015 Subaru Impreza Premium
2015 Subaru Impreza Sport Limited
2015 Subaru Impreza Sport Premium
2015 Subaru WRX Base
2015 Subaru WRX Limited
2015 Subaru WRX Premium
2015 Subaru WRX STI Base
2015 Subaru WRX STI Launch Edition
2015 Subaru WRX STI Limited
2016 Subaru Crosstrek Base
2016 Subaru Crosstrek Hybrid
2016 Subaru Crosstrek Hybrid Touring
2016 Subaru Crosstrek Limited
2016 Subaru Crosstrek Premium
2016 Subaru Impreza Base
2016 Subaru Impreza Limited
2016 Subaru Impreza Premium
2016 Subaru Impreza Sport Limited
2016 Subaru Impreza Sport Premium
2016 Subaru WRX Base
2016 Subaru WRX Limited
2016 Subaru WRX Premium
2016 Subaru WRX STI Base
2016 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2017 Subaru Crosstrek Base
2017 Subaru Crosstrek Limited
2017 Subaru Crosstrek Premium
2017 Subaru WRX Base
2017 Subaru WRX Limited
2017 Subaru WRX Premium
2017 Subaru WRX STI Base
2017 Subaru WRX STI Limited
2018 Subaru WRX Base
2018 Subaru WRX Limited
2018 Subaru WRX Premium
2018 Subaru WRX STI Base
2018 Subaru WRX STI Limited
2018 Subaru WRX STI Type RA
2019 Subaru WRX Base
2019 Subaru WRX Limited
2019 Subaru WRX Premium
2019 Subaru WRX STI Base
2019 Subaru WRX STI Limited
2019 Subaru WRX STI S209
2020 Subaru WRX Base
2020 Subaru WRX Limited
2020 Subaru WRX Premium
2020 Subaru WRX STI Base
2020 Subaru WRX STI Limited
2021 Subaru WRX Base
2021 Subaru WRX Limited
2021 Subaru WRX Premium
2021 Subaru WRX STI Base
2021 Subaru WRX STI Limited

Vehicle Fitment