Add to Wish List Quick view Compare Add to Cart Radium Engineering Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit - 20-0607 MSRP: $449.95 Was: Now: $427.45 The Radium air/oil separator traps blow-by oil before it can be sent back to the induction system. The collected oil is heated by the AOS to remove moisture, then allowed to drain back into the... Add to Cart
