CSF High Performance Single Row Aluminum Radiator 2008-2021 WRX / 2008-2021 STI / 2009-2013 Forester / 2005-2009 Legacy / 2005-2009 Outback / 2008-2016 Impreza / 2016-2017 Crosstrek

This radiator will not be a direct fit for automatic vehicles, and is designed specifically for use with MT vehicles. 

Upgrade your cooling system with the CSF High-Performance All-Aluminum Radiator—engineered for maximum efficiency on both the street and the track. Whether you're pushing high horsepower or demanding more from your Subaru on the street, this radiator delivers the cooling performance you need.

At the heart of its design is CSF’s advanced 1-row core featuring exclusive B-Tube Technology. Unlike traditional “O” shaped tubes, the B-tube design is brazed over a center seam, creating a stronger structure using thinner, lighter aluminum. This allows for approximately 15% more surface area inside each tube, improving heat transfer and efficiency. The result is dual liquid laminar flow within the same space, optimizing cooling even under extreme conditions.

Paired with ultra-efficient, multi-louvered fins that are precisely aligned for maximum airflow, this radiator ensures superior heat rejection. Each core is tested in CSF’s wind-tunnel lab to meet the highest performance standards for your specific application.

Features:

• High-Performance Core Features CSF's Exclusive B-Tube Technology
• Core Featured Ultra Efficient 6.5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• 100% All-Aluminum TIG-Welded Construction
• CNC Machined Mounting Brackets
• Innovative "Multi-Fit" Combo Pipe and Plug Design, Included
• True "Drop-in Fit" Requires No Modifications to Install
• Individually Leak and Pressure Tested
• 1 Hour "Mirror Finish" Hand Polish
• For Manual Transmission Only
• Supersedes CSF #7028

Fitments:

• 2008-2021 STI
• 2008-2021 WRX
• 2009-2013 Forester  
• 2008-2016 Impreza
• 2005-2009 Legacy
• 2005-2009 Outback
• 2016-2017 Crosstrek 

Note: If you have an older CSF SKU 7028 Radiator, and wish to use it on a 2015-2021 WRX the Turbo Return Pipe on Top Right-Hand Side End Tank must be capped off.