Radium Engineering Air Oil Separator - Return Kit For 2012-20 Subaru BRZ, 12-16 FR-S, 12-21 86 - 20-0351
RAD20-0351
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CA WARNING:
Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information go to
www.P65Warnings.ca.gov/motor-vehicle-parts.
RADIUM ENGINEERING AIR OIL SEPARATOR - RETURN KIT
OVERVIEW
High-powered modified Toyota 4U-GSE and Subaru FA engines tend to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can may quickly fill with oil and not be adequate. Like the Radium Engineering, the AOS-R (Air Oil Separator-Return) 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-R system returns what is collected back into the oil pan (as shown below) so there is no servicing required. The AOS-R is constructed of three CNC machined sections that screw together and are sealed with O-rings.
The built-in heater keeps water from condensing in the AOS-R. And because water is more dense 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.
BENEFITS
- Effectively raises the octane and increases engine performance with cleaner inlet air.
- Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc.
- Lowers hydrocarbon emissions.
PORTS
- Inlet: 7/8"-14 threaded for 10AN ORB fittings
- Outlet: 7/8"-14 threaded for 10AN ORB fittings
- Return: 7/8"-14 threaded for 10AN ORB fittings
- Coolant: 7/16"-20 threaded for 4AN ORB fittings (x2)
Installation Instructions
Installation Instructions
If operated in freezing environments, Radium Engineering recommends installing insulation sleeving (not included) over any hose exposed to cold air flow. This will help prevent the natural phenomenon of water condensation freezing and potentially clogging the hose.
Fitment
Fitment
