SKU: 94903519046

AOS-R, UNIVERSAL KIT

Sale price$118.77 Regular price$131.97
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

AOS-R, UNIVERSAL KITA high powered modified engine tends to generate excessive blow by oil and gasses. In these cases, an ordinary small catch can may quickly fill with oil and not be adequate. Like the Radium Engineering Catch Cans, the AOS (Air Oil Separator) kit is responsible for keeping blow by oil and other pollutants out of the air intake and intercooler (if equipped) systems. The main difference is that an AOS system returns collected oil back into the oil pan so

A high powered modified engine tends to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can may quickly fill with oil and not be adequate. Like the Radium Engineering Catch Cans, the AOS (Air Oil Separator) kit is responsible for keeping blow-by oil and other pollutants out of the air intake and intercooler (if equipped) systems. The main difference is that an AOS system returns collected oil back into the oil pan so there is no servicing required.

IMPORTANT INSTALLATION NOTES:

-In order for the AOS to function properly, a port must be supplied on the engine for the oil to return through.
-The AOS must be mounted high enough in the engine bay so that the port on the bottom is higher than the oil return port on the engine.
-for heating purposes, engine coolant must be routed to the AOS-R to prevent condensation.

Without a properly designed AOS, water condensation can develop and find its way in the oil pan contaminating engine oil. Engine coolant lines are routed through the Radium Engineering AOS in a specially designed heating chamber (shown above). This keeps the AOS warm and prevents water from condensing inside. Because water is more dense than oil, there is an integrated water trap found around the bottom perimeter that prevents condensation from descending into the oil pan.

For AOS crankcase plumbing, the valve cover vent(s) are routed into the top inlet where the stainless steel condensing material separates the oil from the gasses. The filtered liquid oil is collected at the bottom of the AOS and drawn into the oil pan. Meanwhile, the clean crankcase air can either be vented to atmosphere (VTA) or recirculated to the turbo air inlet pipe. Shown below is a plumbing example.

With a properly operating system, the fluid level inside the AOS will be empty after sitting. If there is a possible return obstruction, simply unscrew the anodized billet aluminum dipstick for inspection. Conversely, the entire billet unit disassembles into 3 large pieces for servicing.

Benefits
-Effectively raises the octane and increases engine performance with cleaner inlet air
-Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc.
-Lowers hydrocarbon emissions

Included
-Machined alumium Radium Engineering AOS
-Anodized universal mount that permits 360deg rotation
-Two 5/16" barbed fittings for coolant lines
-Stainless steel hardware

Ports
Top Port: 7/8"-14 threaded for 10AN ORB fittings
Side Port: 7/8"-14 threaded for 10AN ORB fittings
Bottom Port: 7/8"-14 threaded for 10AN ORB fittings
Coolant Ports: 7/16"-20 threaded, includes two 7mm (or 5/16") barb fittings

Measurements
AOS Height: 6.94" (top of dipstick to bottom of AOS)
AOS Diameter: 3.45" Round
AOS Capacity: 20.3 oz (600mL)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 94903519046

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4.2 ★★★★★
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Kindle Customer
Carnegie, US
★★★★★ 4
Nice toy
My dog doesn't chew up his toys, so I'm lucky.
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Reviewed in the United States on May 8, 2026
R
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Rynette Keen
Whiting, US
★★★★★ 5
Squeaky Love
Your fur baby will love it.
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Reviewed in the United States on April 18, 2026
B
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Belinda Steppe
Boise, US
★★★★★ 5
Sturdy
Sturdy. Been about two months. The rascal still hasn’t destroyed it 😊
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Reviewed in the United States on April 5, 2026
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Verified Purchase
Tidawan Grogan
Phoenix, US
★★★★★ 5
Small and soft
Perfect size for my small dog. My dog loves it.
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Reviewed in the United States on March 30, 2026
B
Becky S
Charlottesville, US
★★★★★ 4
Cute for small dogs, but my Malinois made it extinct in minutes
I ordered this plush toy for my Belgian Malinois, and I went into it fully aware of what I was doing. With my dog, “plush toy” basically translates to “short lived prey simulation,” and I’m honestly okay with that because it helps her satisfy that prey drive in a safe, controlled way. She is always under direct supervision when she has toys like this. The toy is cute, and the concept is fun. The wings and textures are engaging, and I can see how the squeaker/crinkle would be exciting for a small or medium dog that actually plays with plush toys instead of immediately performing surgery on them. For my dog though, it was not durable in any sense of the word. Within about 30 seconds, she had both wings ripped off. Within five minutes, the entire thing was shredded and gutted. It did its job as an enrichment “destroy me” toy, but if you’re buying this expecting it to last, it won’t hold up to a strong chewer. It’s also not quite as plush and soft as it looks in the listing photos. It’s more on the lightweight side, which might be fine for smaller dogs, but it felt a bit less cozy than I expected. I’m giving it four stars because it is a cute toy and would probably be a fun, engaging option for the intended size range, especially dogs that aren’t power shredders. For large breeds or dogs with intense chewing styles (or Belgian Malinois energy), just know it’s going to be a very brief relationship.
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Reviewed in the United States on January 15, 2026

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