Skip to content

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

Marsoni M251S
Sale price$213.72
Pay 4 payments of $53.43 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Radium Engineering 2015+ Subaru STi Air Oil Separator-Return KitAir oil separator kit for the late model Subaru platforms. Includes all parts need to complete the installation. AOS is fully serviceable. 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 2018 Subaru WRX STI Type RA
Easy Shipping

Quick Dispatch:

Your Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit ships.

Need Help?
Questions about Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit in your area.

Get Shipping Estimates

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
4.4 ★★★★★
Based on 983 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 5
Great Quality and Stylish
Size: Large, Color: (001) Black / Black / White
Exactly what I was looking for. I don’t like socks that are no-show that your ankles rub on the shoe. These are taller than that but shorter than socks that go up and over the ankle. They’re comfortable, good quality, and pretty thick. They’re form fitting m, but not compression. I dint like compression socks, and these are tight, but not too tight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2025
E
Verified Purchase
Eric
Draper, US
★★★★★ 5
Affordable and good quality socks
Size: Medium, Color: (001) Black / Black / White
Good quality!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
T
Verified Purchase
Thomas Boelter
Whiting, US
★★★★★ 4
Socks
Size: Large, Color: (001) Black / Black / White
They are very comfortable and fit just right
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 3, 2025
C
Verified Purchase
Clint
Phoenix, US
★★★★★ 5
Great socks!
Size: Large, Color: (001) Black / Black / White
These fit true to size. Good socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
P
Verified Purchase
PETER CROWE
Omaha, US
★★★★★ 5
Great for walking all day at work as well
Size: X-Large, Color: (001) Black / Black / White
I walk approximately 10 miles a day at work, in a manufacturing setting. On concrete with steel toe shoes. My feet have been begging me to change from the socks that I have worn for years. I have worn these other name brand socks for probably 10 years. So, change was obviously something I had to be pushed into. I got on Amazon and searched for training socks. I read the description. Glanced at the reviews. I decided to move forward with purchasing these. I could not have been happier. My feet began feeling better immediately. And the priced was very reasonible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026

recommand products