Radium Air Oil Separator - Universal Kit
Application: Universal - all engine types with a suitable crankcase breather/return port
Part Type: Air oil separator-return (AOS-R), vent to engine (VTE)
Part Number: 20-0219
High-output engines often produce more blow-by oil and gas than a small catch can can handle. The Radium Universal AOS-R separates oil and contaminants from crankcase vapour before they reach the intake, then returns the collected oil to the sump above the oil level - so, unlike a catch can, it needs no emptying.
Engine coolant circulates through a heating chamber to keep the unit warm and prevent internal condensation, while a water trap around the bottom edge stops water reaching the sump. Part 20-0219 is the vent-to-engine (VTE) version with a top inlet and side outlet routed back into the intake or turbo inlet pipe - recommended for MAF-equipped engines.
Key Features
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Oil Return: Returns separated oil to the sump - no emptying required
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Coolant Heated: Heating chamber prevents internal condensation
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Water Trap: Keeps water from reaching the sump
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Vent to Engine: Top inlet and side outlet - suits MAF sensor engines
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Serviceable: Splits into three large billet pieces; dipstick checks for a return obstruction
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Rotating Mount: Aluminium mount rotates 360°
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Cleaner Intake: Reduces oil build-up in the intake, intercooler, throttle body and manifold, and lowers hydrocarbon emissions
What's Included
- 1x Machined aluminium AOS-R unit
- 1x Aluminium 360° rotating mount
- 2x 5/16in barbed coolant fittings
- Stainless steel hardware
Optional Parts
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Radium Engineering AOS-R - Universal VTA (Vent to Atmosphere) (20-0819) - vent-to-atmosphere version (not recommended for MAF engines)
Important Notes
- The engine needs a breather/return port high enough that oil is not drawn from the sump, yet low enough to connect to the AOS-R bottom port
- Mount the AOS-R so its bottom port sits higher than the engine return port, with the return hose running downhill
- Coolant must be routed through the unit to prevent condensation
- Insulation sleeving (not included) is recommended on hoses exposed to cold air
- 10AN ORB fittings are required for the inlet, outlet and return ports (sold separately)
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Universal - see Application
For application support, send your vehicle details to TJ Auto Parts through the Parts Finder.
Supplier-listed applications:
- Universal - see Application
Note: Compatibility information is provided as a general guide only. Some vehicles may have multiple part variations for the same model or engine. To ensure this product is the correct fit and to be eligible for our Fitment Guarantee, please contact our team before purchasing.
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We aim to process and dispatch all orders within 1–2 business days. If there are any delays, we will notify you promptly via email.
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Dispatch & Handling
We aim to process and dispatch all orders within 1-2 business days. In the event of any delays, our customer service team will notify you. Tracking numbers are sent via email once your order has been dispatched and can also be accessed from your account.
For enquires on same day delivery or pickup, please contact our team before ordering to check availability. Custom or order in only items may have longer lead times. For more details on shipping, see our Delivery information page.
Returns and Refunds
If you change your mind or need to cancel an order, simply contact us at contact@tjautoparts.com.au within 30 days of delivery. Items should be unused and in their original packaging. A small restocking/admin fee of 5–20% may apply to help cover processing costs. This fee is only applicable at the discretion of our staff and may not apply to all orders. Return shipping is covered by you unless we sent the wrong or faulty item, in which case we’ll take care of it. Once we receive your return, refunds are processed quickly, usually within 48 hours, with up to 5 business days for your bank to complete the transfer.
We’re here to help make returns easy and hassle free! Contact us with any questions.
Warranty
All products come with the manufacturer’s warranty. If you experience any issues, please contact us at contact@tjautoparts.com.au. For full details on warranty coverage and claims, please visit our Returns page.
