Fitment Information:
2015-2021 Subaru STI
Features:
With the Verus Engineering Air Oil Separator (AOS) you can ensure that your intake system remains oil-free. Oil in the intake system reduces octane, which can lead to detonation, power reduction, and carbon build-up. This AOS filters both the crankcase vent location as well as the intake filter location, through a single unit. Composed of four, 5-micron coalescent filters, one on each inlet and outlet, baffling, and stainless mesh, it offers unprecedented air filtration for the crankcase air. Directly installs like an OE component with no change to the tune or setup required.
An optional coolant hook-up kit runs hot coolant through the AOS to reduce condensation build-up during the colder months.
- Available in anodized Black, Red, or Blue
- Designed to help prevent oil from getting in the intake system
- CNC Machined from 6061-T6
- Mil-Spec O-Ring Bosses
- Anodized for Corrosion Resistance
- CNC Laser Engraved
- Four 5-Micron Coalescent Filters
- 4 Coalescent Filters that Filter Particulates Larger than 5 Micron
- Stainless Mesh to Further Condense Oil Vaper
- Baffles for Further Separation of Oil Particles
- Includes all necessary parts for a seamless install
- Made in the USA
What’s Included:
- Assembled AOS (4 Coalescent Filters, Internal Baffling, and Stainless Mesh)
- Sheet Steel Bracket for VA Chassis – LHD Only
- 3/4″ Rubber Hose
- 1/2″ Rubber Hose
- 3/8″ Rubber Hose
- Installation Hardware kit
Please note: Anodized parts can potentially fade over time due to engine bay heat.