Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit

Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit

Marsoni

M251S

$213.97

Get it in 3 business days with 1 day shipping. Friday, May 29

Radium Engineering 2015+ Subaru STi Air Oil Separator-Return KitThe 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

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I do like the wallet but I hate the little extra flap inside it. It's very hard to get my license out of it. It makes the wallet way too thick. I just took it out and i don't use it. They should of just sewn 1 flap in there and the wallet would of been much thinner and still able to use the extra flap.

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Reviewed in the United States on May 17, 2026