Perrin 2022 + Toyota GR86 / 2013 - 2016 Scion FR-S / 2013 - 2023 + Subaru BRZ Air Oil Separator - Black

SWIRL POT TECHNOLOGY

The PERRIN Air Oil Separator features swirl pot technology and multi-layer baffles. This design forces incoming engine blow-by to move rapidly across the baffles, separating oil from the engine blow-by. Multiple layers of baffles means more surface area to collect more oil, making for a compact and efficient design.

Oil entering from the crankcase vents spins counterclockwise through the entire body of the AOS, passing along four walls equaling roughly 50 sq/in of surface area. The multiple baffle walls in our compact design simulate the surface area of an AOS that is 13.5" tall!

HEATED BY COOLANT

The base plate of the air oil separator is heated by coolant drawn from the engine. This heats the entire air oil separator to the same temperature as the engine blow-by. By keeping the air oil separator the same temperature as the blow-by, water condensation is significantly decreased, allowing oil, air, and water vapor to separate and pass through the body.

This vital feature eliminates nearly all the sludge that can build up in the air oil separator body, which is a common problem with catch cans and other air oil separators.

REDUCE CARBON BUILDUP

Reduce carbon buildup in the combustion chamber, intake valves, and in your intake tract. Crankcase blow-by is recirculated back to the intake to be ingested by the engine, but in doing so, gets stuck in the intake tract, intake valves, and the intercooler. This builds up over time which causes a loss in power and extra wear and tear on your valves.

CNC MACHINED FITTINGS

The low-profile aluminum fittings provided with the PERRIN Air Oil Separator are CNC machined and anodized black for both a clean, sleek look and corrosion resistance. These tough and durable fittings are designed and finished to last the life of your vehicle.

FINISH

Powder coated for protection against the elements, the finish will look awesome for years to come. The PERRIN Air Oil Separator is available in black, red, or neon yellow powder coating.

SUBARU SPECIFIC

The PERRIN Air Oil Separator is designed to connect to each crankcase vent separately without requiring any T-connections. This allows for better venting and reduces the chance of oil being ingested during high G corners (a common issue on flat-type or boxer engines).