CSF High-Performance Radiator - Subaru WRX/STI (2008-2021)

This is the same 2-row, 42mm B-tube radiator I’d spec for a WRX or STI that’s seeing regular track time. CSF builds the core with their B-tube design instead of a standard oval tube, which increases the heat transfer surface area by roughly 15% in the same physical space, paired with 6.5mm multi-louvered fins tuned for airflow. Everything’s TIG-welded aluminum with CNC-machined brackets, and it’s a true drop-in fit: OE-style connections, no modifications needed.

Manual transmission only. Supersedes CSF #7042.

Fits:

• 08-14 Subaru Impreza WRX (MT)

• 08-14 Subaru Impreza STI (MT)

• 15-21 Subaru WRX/STI (MT)

Also fits: 12-16 Impreza, 05-09 Legacy, 05-10 Outback, 09-13 Forester, 16-17 Crosstrek (MT).

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