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.The CSF WRX/STI 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.

Features

• 2-Row 42mm Core (Dual Core) Featuring CSF's Exclusive B-Tube Technology
• Core Features an Ultra-Efficient Fin with 6.5mm Fin Height and Multi-Louvered Design for Maximum Surface Area Contact
• CNC Machined "Quick-Connect" Inlet/Outlet Connections
• CNC Machined Brackets and Fittings for Superb Fit and Durability
• All-Aluminum Race Style Drain Plug
• 1-Hour "Mirror Finish" Hand Polish
• "Drop-in Fit" Requiring No Modifications to Install - Accepts All Attaching OEM Components Including "Quick Connect" Hoses, AC Condenser, Mounting Brackets and Fan Shroud

Applications

• 2016-2017 Subaru Crosstrek Base - H4
• 2016 Subaru Crosstrek Hybrid - H4
• 2016 Subaru Crosstrek Hybrid Touring - H4
• 2016-2017 Subaru Crosstrek Limited - H4
• 2016-2017 Subaru Crosstrek Premium - H4
• 2016-2017 Subaru Crosstrek Sport - H4
• 2016-2017 Subaru Crosstrek Touring - H4
• 2009-2013 Subaru Forester X - H4 (Manual)
• 2009-2013 Subaru Forester X Premium - H4 (Manual)
• 2009-2013 Subaru Forester X Touring - H4 (Manual)
• 2012-2016 Subaru Impreza Base - H4
• 2012-2016 Subaru Impreza Limited - H4
• 2012-2016 Subaru Impreza Premium - H4
• 2012-2015 Subaru Impreza Sport - H4
• 2012-2016 Subaru Impreza Sport Limited - H4
• 2012-2016 Subaru Impreza Sport Premium - H4
• 2012-2016 Subaru Impreza Touring - H4
• 2008-2014 Subaru Impreza WRX - Turbocharged 2.5L H4 (Manual)
• 2008-2014 Subaru Impreza WRX STI - Turbocharged 2.5L H4 (Manual)
• 2006-2009 Subaru Legacy 2.5i - H4 (Manual)
• 2007-2009 Subaru Legacy 2.5i Limited - H4 (Manual)
• 2007-2009 Subaru Legacy 2.5i Special Edition - H4 (Manual)
• 2009 Subaru Legacy 2.5i Touring - H4 (Manual)
• 2005-2008 Subaru Legacy GT - H4 (Manual)
• 2005-2009 Subaru Legacy GT Limited - H4 (Manual)
• 2006-2009 Subaru Legacy GT spec.B - H4 (Manual)
• 2005 Subaru Legacy i - H4 (Manual)
• 2005-2008 Subaru Legacy Limited - H4 (Manual)
• 2008 Subaru Legacy Touring - H4 (Manual)
• 2008 Subaru Outback 2.5 XT - H4 (Manual)
• 2006-2009 Subaru Outback 2.5i - H4 (Manual)
• 2007 Subaru Outback 2.5i Basic - H4 (Manual)
• 2008 Subaru Outback 2.5i L.L. Bean Edition - H4 (Manual)
• 2006-2009 Subaru Outback 2.5i Limited - H4 (Manual)
• 2008 Subaru Outback 2.5i Limited L.L. Bean Edition - H4 (Manual)
• 2009 Subaru Outback 2.5i Special Edition - H4 (Manual)
• 2008 Subaru Outback Base - H4 (Manual)
• 2005 Subaru Outback i - H4 (Manual)
• 2005-2008 Subaru Outback Limited - H4 (Manual)
• 2008 Subaru Outback Premier - H4 (Manual)
• 2008 Subaru Outback Touring - H4 (Manual)
• 2005-2006 Subaru Outback XT - H4 (Manual)
• 2005-2009 Subaru Outback XT Limited - H4 (Manual)
• 2015-2021 Subaru WRX - Turbocharged 2.0L H4 *The #7042O can be made to fit the 2015-2021 WRX by capping off the Turbo Return Pipe on Left Side the Top End Tank.
• 2015-2021 Subaru WRX STI - Turbocharged 2.5L H4 (Manual)

OEM Part Numbers

• Subaru: 45119FG030
• Subaru: 45119SC090
• Subaru: 45119AG010
• Subaru: 45111AG09A
• Subaru: 45111AG01A
• Subaru: 45119SC010
• Subaru: 45119VA000
• Subaru: 45119VA010