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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
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
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 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 STI | Launch Edition |
| 2015-2020 | Subaru | WRX STI | Limited |
| 2016 | Subaru | WRX STI | Series.HyperBlue |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.5 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 4
Good protection
Color: Green Glow and Blue Glow
Have kids or you drop the remote alot. This product is very nice! The glow isn't very noticeable, but the colors and function of the rubber are well worth it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 6, 2025
★★★★★ 5
Great Fit.
Color: Green Glow and Blue Glow
These cases are awesome. They work great. Only issue is they are not puppy proof. I have had to order about 10 pairs sofar.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Perfect fit, good quality
Color: Green Glow and Blue Glow, Color: Green Glow and Blue Glow
Easy installation, good quality, protects your remote, has a bit of a glow in the dark.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
★★★★★ 5
works well
Color: Green Glow and Blue Glow
great quality, and makes finding the remote much easier
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
★★★★★ 5
Awesome Case!!!
Color: Black
This is an easy 5 stars. Feels great, adds a layer of protection and a snug fit. If you have kids in the home this is a no brainer!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
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