high-performance all-aluminum radiator (Competition Race Spec)

Impreza WRX/STi

CSF’s Subaru line of all-aluminum radiators is the most trusted option in competitive motorsports – many race teams across the world trust CSF to keep their cars cool.

Designed to perform on track, on the street, and in rally racing. A must-have for higher horsepower engines, high boost vehicles, and competitive motorsports. Also a great upgrade compared to the OEM plastic/aluminum radiator.

Precise fitment – requires no modifications to install.

2-row race-spec core has three times the cooling capacity vs. the 1-row OEM plastic/aluminum unit.

CSF #7042 – Superseded by CSF #7095
MSRP $369.00 USD
MAP $349.00 USD

  • 2008+ Subaru Impreza STI (Manual Transmission)
  • 2008-2014 Subaru Impreza WRX (Manual Transmission)
  • 2012-2016 Subaru Impreza (Manual Transmission)
  • 2005-2009 Subaru Legacy (Manual Transmission)
  • 2005-2010 Subaru Outback (Manual Transmission)

  • 2013-2017 Subaru Crosstrek (Manual Transmission)
  • 2013-2015 Subaru XV Crosstrek (Manual Transmission)
  • 2009-2013 Subaru Forester (Manual Transmission)
  • 2015-2021 Subaru WRX (Manual Transmission)*
  • *Must Cap Off Turbo Return Pipe on Top Right-Hand Side End Tank



  • CNC Machined Mounting Brackets
  • 100% All Aluminum TIG-Welded Construction
  • Includes High-Performance Aluminum 1.4bar Radiator Pressure Cap with Embossed CSF Logo
  • 1-Hour Hand Polished Mirror Finish
  • True “Drop-in” Fit With No Modifications Necessary for Installation
  • Machined All-Aluminum Race-Style Drain Plug

high-efficiency core


  • 2-Year Limited Warranty
  • Individually Leak Tested
  • All CSF High-Performance Radiators Undergo a Rigorous Testing Process During Development, Including Burst Pressure, Thermal Cycle, Vibration Testing, and Salt Spray Testing


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