Air Oil Separator for GD, GR, FXT and VA chassis.
EASY INSTALL / EASY MAINTENANCE
At Killer B we are always striving to make improvements to the status quo.
Our design is easy to install and easy to clean.
Why Buy a Killer B AOS:- No coolant lines to run.
- Average installation in 2 hours. Most competitors take 5.
- Easy to inspect and clean.
- Swirl Pot design similar to many exotic sports cars.
- Killer B Motorsport Lifetime Warranty.
Click here to learn more about installing our AOS
2002 to 2007 WRX / STi Air Oil Separator
Now $359.00
Buy Now
2008 to 2014 WRX / STi Air Oil Separator
Now $359.00
Buy Now
2015 + FA20 WRX / FXT Air Oil Separator
Now $339.00
Buy Now
The goal of this product is simple. To function as its Air/Oil Separator description implies: the removal of oil, in liquid or vapor form, from the vented crankcase gasses. We do this using a swirl pot design found on many high performance exotic cars. Other Air Oil Separation designs use baffles to slow the flow of gasses while removing particulate. Our AOS removes particulate without reduction in flow making it more efficient at a wider range of flow.