RADIUM Air Oil Separator Kit FA20 WRX / Forester

Description:
High-powered modified Subaru engines tend to generate excessive blow-by oil and gases. In these cases, an ordinary small catch can quickly fill with oil and not be adequate. Like the Radium Engineering Subaru Dual Catch Can Kit, the AOS (Air Oil Separator) kit is responsible for keeping blow-by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. The main difference is that an AOS system returns what is collected back into the oil pan so there is no servicing required. The built-in heater keeps water from condensing in the AOS. And because water is denser than oil, there is an integrated water trap found around the bottom perimeter of the can. This prevents water from descending into the oil pan if ever-present. Furthermore, because the water is trapped against the heater, it will eventually boil and evaporate out of the system.

Features:
- Effectively raises the octane and increased engine performance from cleaner inlet air - Prevents oil buildup in the intake and intercooler system walls, throttle body, intake manifold, etc.
- Excessive oil collection can be an indicator of a damaged engine
- Lowers hydrocarbon emissions

Includes:
- Specially designed mounting bracket
- All necessary SAE J30R7 rated PCV/Emissions hose
- Coolant hoses and fittings
- PCV delete fitting
- All necessary aluminum fittings and hose-ends
- Stainless steel mounting hardware

Applications:
2015-2021 WRX
2014-2018 Forester XT