CSF Subaru Impreza 2017-2022 High-Performance Radiator

CSF has a long and successful track record with high-performance, heavy-duty, off-road grade radiators, and with most off-road-capable vehicles, factory cooling components can easily become overstressed, whether from the demanding strain of climbing terrain or dirt clogging the core. Between dealing with traction loss, steep inclines, and the extra weight of gear, there's almost always more strain on the engine during off-road or overland use, resulting in above-average operating temperatures that the factory radiator can struggle to keep up with.

The 2-row, 42mm aluminium core not only increases fluid capacity but also improves the core's ability to dissipate heat, using CSF's exclusive B-Tube technology to increase heat transfer by approximately 15% over regular oval welded tubes. Super-efficient, multi-louvered 6.5mm tall fins maximise airflow through the core, which matters especially in off-road driving, where lower speeds mean you rely more heavily on the factory fans to move air through the radiator than you would at typical city or highway speeds. A larger, more efficient core also helps when the radiator inevitably gets covered in dust, dirt, or mud, since more overall cooling capacity gives you a better margin even when the radiator isn't operating at peak efficiency. End tanks are made from high-grade aluminium and TIG-welded to the core for genuine strength, in contrast to the OEM's crimped-onto-plastic design, a well-documented weak point where failure is more likely. This is a true plug-and-play drop-in fit, requiring absolutely no modifications, trimming, or cutting to install.

Works with: OEM mounting hardware, both AT and MT transmissions. Fits both the 2.0L (FB20) and 2.5L (FB25) naturally aspirated engines.

Why Choose This Radiator

• CSF's exclusive B-Tube core technology, approximately 15% more heat transfer than regular tubes
• Purpose-built for off-road and overland demands, not just street driving
• 6.5mm multi-louvered fins, maximise airflow at the lower speeds typical of off-roading
• TIG-welded aluminium end tanks, eliminating the OEM's weaker crimped plastic design
• True plug-and-play drop-in fit, no modifications, trimming, or cutting required
• Fits both AT and MT transmissions across the 2.0L and 2.5L engine range

Compatibility

• Subaru Impreza Sedan (2017-2022, FB20/FB25, AT/MT)
• Subaru Impreza Wagon/Hatchback (2017-2022, FB20/FB25, AT/MT)
• Subaru Crosstrek (2018-2023, FB20/FB25 incl. Hybrid, AT/MT) — shares this radiator platform

Note: this is CSF's naturally-aspirated FB20/FB25 radiator. Turbocharged WRX models use a separate, dedicated CSF radiator, confirm which platform you need before ordering.