Radium Engineering Universal Air Oil Separator (AOS-R)

Radium Engineering Universal Air Oil Separator (AOS-R)

Marsoni

M251S

$151.97

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

Radium Engineering Universal Air Oil Separator (AOS-R)This air oil separator is designed to collect crankcase gasses and allow collected oil to drain back into the engine via gravity. Gasses are then vented to the atmosphere out the top of the AOS VTA. Universal installation.

Easy Shipping

Quick Dispatch:

Your Radium Engineering Universal Air Oil Separator (AOS-R) 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 Universal Air Oil Separator (AOS-R) ships.

Need Help?
Questions about Radium Engineering Universal Air Oil Separator (AOS-R), 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 Universal Air Oil Separator (AOS-R) in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

For those of you with the 135 hp mercury that was branded as the "Sea Ray 135" and paint matched to the boat (i.e. Seville's and some others) this is the 147 degree thermostat for that motor. My Seville is an '88 and It's difficult to cross reference the serial numbers on those motors when searching for parts. Only buy Quicksilver parts for these motors. Happy to find them on Amazon because Boats.net as an example, is not clear on what you're getting.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 3, 2024

Verified Purchase

Carlton Earley

Omaha, US

★★★★★ 5

fixed issue

stopped the overheat issue on my outboard!!!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 6, 2025

Verified Purchase

Brett W.

Bozeman, US

★★★★★ 5

Carries all the current I want. Super flexible, great price

Size: 8 AWG 3 ft per color, Color: Red and Black

Very nice high quality. Somebody tried to tell me this was aluminum strands. But after test sanding an exposed end, I could see copper color. I believe the confusion is they are individually tinned strands? 🤷 Just sayin...

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on June 28, 2025

Verified Purchase

Noce

Cuba, US

★★★★★ 5

good quality.

Size: 8 AWG 3 ft per color, Color: Red and Black

The wire worked very well for my project.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 22, 2024