The Subaru WRX STI Air Oil Separator Kit by Radium Engineering is an essential upgrade for your 2015-2021 model. This comprehensive kit includes all necessary components for reducing oil blow-by, ensuring your engine runs cleaner and more efficiently.

Designed specifically for Subaru enthusiasts, the Radium Engineering Air Oil Separator (AOS) plays a critical role in maintaining optimal engine performance. Featuring a fully serviceable design, this kit captures and separates oil vapor from crankcase gases before they re-enter the intake tract, effectively minimizing carbon build-up and enhancing longevity of the engine. With a high-quality construction tailored for the Subaru platform, the AOS kit guarantees a perfect fit and smooth functionality.

Features

• Complete kit with all necessary parts for installation.
• Compatible with Subaru `15-`21 models.
• Fully serviceable and easy to maintain.
• Installation instructions available at radiumauto.com.

If you're looking to enhance your Subaru experience, this Radium Engineering AOS kit is an excellent choice. For any questions, please call us directly. We have two locations offering professional installation and customization services: Austin, Texas (call us at 512-982-9393) and the Los Angeles, California area (call us at 562-981-6800). Additionally, if considering multiple purchases, contact us to explore potential shipping discounts. Installation services are available on premises at both locations.

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