Product Description
Fitment:
2017-2020 Toyota 86
2013-2020 Subaru BRZ
2013-2016 Scion FR-S
Features:
High-powered modified 4U-GSE and FA20A 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.
The Radium Engineering AOS (Air Oil Separator) kit is has been designed to keep blow-by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. This AOS system returns what is collected back into the oil pan. The built-in heater keeps water from condensing in the AOS 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.
The AOS is constructed of three CNC machined sections that screw together and are sealed with O-rings.
Measurements:
AOS Height: 6.3" (without fittings)
AOS Diameter: 3.45" Round
AOS Capacity: 20.3 oz (600mL)
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
What is included?
Machined alumium Radium Air Oil Separator
Specially designed mounting bracket
SAE J30R7 rated PCV/Emissions hose
Coolant heater hoses and fittings
All necessary aluminum fittings and hose-ends
Stainless steel mounting hardware
Usually ships same or next day. 
