Radium Engineering Universal Air Oil Separator Return (AOS-R) Universal 10AN ORB

Radium Engineering Universal Air Oil Separator Return (AOS-R) - Universal - 10AN ORB

High powered and modified engines generate excessive blow-by gases and oil mist that can contaminate your intake, intercooler, and manifold. Radium Engineering's AOS-R (Air Oil Separator Return) goes beyond a conventional catch can by actively returning collected oil back into the sump above the oil level — resulting in a largely service-free system. Integrated coolant routing through the heating chamber prevents internal water condensation, while a built-in water trap around the base stops any moisture from reaching the oil pan.

This listing covers the Radium Engineering 20-0219 AOS-R Universal VTE (Vent-to-Engine) with 10AN ORB ports. The VTE configuration is required for engines equipped with a mass airflow (MAF) sensor, and routes cleaned crankcase air back into the intake or turbo inlet pipe. A companion VTA (Vent-to-Atmosphere) variant is available as 20-0819, and a VTA-to-VTE adapter is available as 20-1773.

Note: The VTA variant (20-0819) is not suitable for MAF sensor equipped engines due to the open vent introducing an unmeasured air leak into the system. For single crankcase vent engines using the VTA unit, one inlet port must be plugged — Radium Engineering part 14-0351 is recommended for this purpose.

Key Features

• Inlet port: 7/8"-14 threaded for 10AN ORB fittings
• Outlet port: 7/8"-14 threaded for 10AN ORB fittings
• Return/inlet port: 7/8"-14 threaded for 10AN ORB fittings
• Coolant ports: 7/16"-20 threaded, includes two 7mm barb fittings for coolant routing
• Integrated coolant heating chamber prevents internal condensation build-up
• Built-in water trap around base perimeter stops moisture entering the sump
• Dipstick port for quick inspection without full disassembly
• Full billet construction disassembles into 3 pieces for servicing
• VTE configuration routes clean crankcase air back to intake — safe for MAF sensor engines
• Returns collected oil to sump above oil level for a service-free operation

Fitment compatibility, configuration notes, and hardware recommendations are provided in the tabs above. Confirm your engine's crankcase vent configuration and sensor type before ordering.

Not sure if this suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.