Radium AOS-R Air Oil Separator for 2015+ WRX Garrett Available as the full kit

Available as the full kit with hose and two clamps or purchase just the hose alone

• Main Bolt

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0 Bolt 11511 -4AN Banjo with M8 x 1

which provides increased heat and pressure tolerance

Radium AOS-R Air Oil Separator for 2015+ WRX Garrett Available as the full kitAn AOS (Air Oil Separator) kit is responsible for keeping blow by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. The AOS "R" system "returns" what is collected back into the oil pan so there is no servicing required. The AOS mounts to the Radium Brake Master Cylinder Brace. The AOS is available with or without the brace in case you have already purchased it. Vehicle Fitment: 2015+