The Verus Engineering Air Oil Separator (AOS) is a top - notch solution for your 2015 - 2021 Subaru WRX. Oil in the intake system can cause problems like reduced octane, detonation, power loss, and carbon build - up. But with this AOS, your intake system stays oil - free. It features four 5 - micron coalescent filters, one at each inlet and outlet, along with baffling and stainless mesh. This setup provides outstanding air filtration for the crankcase air. You can also customize it with optional add - ons such as the Verus AOS drain back kit and AOS coolant add - on kit to perfectly meet your specific requirements. Key features include: CNC machining from 6061 - T6 material; anodized finish for corrosion resistance in Black, Blue, or Red; a CNC Laser - engraved Verus logo; Mil - Spec O - Ring Bosses; four 5 - micron coalescent filters for excellent oil separation; baffles for better oil particle separation; ultra - sonic cleaned stainless mesh as an additional separation medium; direct installation without any tune or setup changes; and it's proudly made in the USA. What's included: (1) Assembled AOS with 4 coalescent filters, internal baffling, and stainless mesh; a sheet steel bracket for VA Chassis (LHD only); 3/4', 1/2', and 3/8' rubber hoses; and all the necessary hardware for installation. Note that anodized parts may fade over time due to engine bay heat.
Using your Verus Air Oil Separator is easy. First, gather all the parts included in the package: the assembled AOS, the sheet steel bracket, the rubber hoses, and the hardware. Find a suitable location in your 2015 - 2021 Subaru WRX engine bay to install the AOS. Attach the AOS using the provided bracket and hardware. Connect the rubber hoses to the appropriate inlets and outlets of the AOS. You don't need to change the tune or setup of your car for this installation. As for maintenance, check the coalescent filters regularly. If they seem dirty or clogged, it's a good idea to replace them. Also, keep an eye on the internal baffling and stainless mesh for any signs of damage or blockage. Remember, the anodized parts on the AOS can fade over time because of the heat in the engine bay. This is normal and doesn't affect the performance of the AOS. If you choose to use the optional drain back kit or coolant add - on kit, follow the additional instructions provided with those parts for proper installation and use.
