Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit Fans 1 - Shiny Black Body

1 - Shiny Black Body / Shiny Black Ring

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Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit Fans 1 - Shiny Black BodyThe 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 engine block, making this a zero maintenance system. Installation is done using factory mounting points. All required hardware, hoses and other items are included in the kit. This Part Fits: Year Make Model Submodel 2015 2020 Subaru WRX STI Base 2015 Subaru WRX