Here, you are looking at the PERRIN Performance Air Oil Separator for your TMIC equipped 2008-2014 WRX, 2008-2021 STI, or 2005-2009 LGT.
Quick Details:
- No Tuning Calibration Required
- Powder Coated Finish
- 50.25 sq/in of surface area
- CNC Machined Aluminum Fittings
- Self-Servicing
- Swirl Pot Technology
- Pre-Heated by coolant to prevent condensation
- Reduces Carbon Buildup and power loss caused by Blowby
Reduce carbon buildup in the combustion chamber, intake valves, and your intake tract.
An AOS traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency and reducing chances of performance-robbing detonation. This increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system!
Crank case 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 valve train. The more blow-by/oil builds up inside your engine, the less efficient it becomes due to less heat being transferred away from your engine. This leads to power loss and detonation, which can be devastating.
The PERRIN Air Oil Separator is not a catch can.
Catch cans capture water and oil vapor filling with a sticky oily mess requiring it to be emptied. The PERRIN AOS separates engine oil from water vapor and allows it to drain back into the engine.
Oil entering from the crankcase vents spins counterclockwise through the entire body of the AOS, passing along four walls equaling roughly 50.25 sq/in of surface area. The multiple baffle walls in Perrin's compact design simulate the surface area of an AOS that is 13.5" tall!
As oil accumulates on all the walls, gravity pulls it to the bottom of the can where it drains back to the engine block while water vapor and air merge with the intake air and are reburied in the engine. The end result is a self-servicing product with no upkeep or maintenance required.
Included:
- (1) PERRIN Air Oil Separator
- (1) Car Specific Bracket
- (1) PERRIN License Plate Frame
- All necessary hardware for installation
- Warranty & Instructions
