Cobb Air/Oil Separator (843615)
The COBB Air/Oil Separator for the FA20 engine integrates into your Subaru's crankcase ventilation system to prevent oil vapors from entering the intake. Developed in partnership with IAG Performance, it features a 1-liter holding capacity, integrated ORB ports, compact cast aluminum body with a wrinkle black powder coat finish, a coolant bleeder valve, bespoke color combinations, and a laser-etched COBB logo. The snail-shaped bottom redirects positive crank pressure into a swirl pattern for maximum oil drainage, while a backplate coolant routing system heats the can to minimize water collection. It is 50-state legal for emissions-controlled vehicles with CARB EO numbers D-660-25 and D-660-45.
Emissions Note: 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it has CARB EO numbers D-660-25 and D-660-45.
Features
- Compact cast aluminum tank design developed in partnership with IAG Performance
- 1 Liter holding capacity with integrated ORB ports
- Wrinkle black powder-coated canister with bespoke COBB anodizing on caps and a laser-etched logo
- Coolant bleeder valve and unique backplate coolant routing system to maximize water evaporation
- Snail-shaped bottom design to redirect positive crank pressure into a swirl pattern for optimal oil drainage
Fitment
- 2015 Subaru WRX Sedan CVT USDM
- 2015 Subaru WRX Sedan MT USDM
- 2016 Subaru WRX Sedan CVT USDM
- 2016 Subaru WRX Sedan MT USDM
- 2017 Subaru WRX Sedan CVT USDM
- 2017 Subaru WRX Sedan MT USDM
- 2018 Subaru WRX Sedan CVT USDM
- 2018 Subaru WRX Sedan MT USDM
- 2019 Subaru WRX Sedan CVT USDM
- 2019 Subaru WRX Sedan MT USDM
- 2020 Subaru WRX Sedan CVT USDM
- 2020 Subaru WRX Sedan MT USDM
- 2021 Subaru WRX Sedan CVT USDM
- 2021 Subaru WRX Sedan MT USDM
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
