IAG Street Series Air / Oil Separator (AOS) Subaru WRX 2015-2021 | IAG-ENG-7187 Color:Red Our exhaust systems feature straight-through

Our exhaust systems feature straight-through flow designs for the ultimate in unrestricted horsepower and torque for big power while maintaining exhaust efficiency

Great for those that plan to return the vehicle to stock one day

- Two position mounting for adjustability

Sprocket specific interface will not round out internal pulley spline like other designs

Lasts up to 5 years outdoors

IAG Street Series Air / Oil Separator (AOS) Subaru WRX 2015-2021 | IAG-ENG-7187 Color:Red Our exhaust systems feature straight-throughFitment Information: 2015 2021 Subaru WRX Please note: The IAG AOS is not compatible with most aftermarket strut tower bars. Instructions: IAG ENG 7187 IAG Air Oil Separator for 2017 21 WRX PDF Instructions IAG ENG 7187 IAG Air Oil Separator for 2015 16 WRX PDF Instructions PROTECT YOUR ENGINE The IAG Air Oil Separator (AOS) is a smart investment to safeguard and improve your Subaru's performance. Developed over years of rigorous testing on various