Radium Air Oil Separator AOS-R Kit for Subaru 09-13 XT, 08-14 WRX, 08-21 STi
High-powered modified Subaru engines tend 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 Subaru Dual Catch Can Kit, the AOS (Air Oil Separator) kit is responsible for keeping blow-by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. The main difference is that an AOS-"R" system "returns" what is collected back into the oil pan so there is no servicing required. The built-in heater keeps water from condensing in the AOS. And because water is denser than oil, there is an integrated water trap found around the bottom perimeter of the can.
This prevents water from descending into the oil pan if ever-present. Furthermore, because the water is trapped against the heater, it will eventually boil and evaporate out of the system. The AOS is constructed of three CNC machined sections that screw together and are sealed with O-rings.
Application:
- 09-13 Subaru Forester XT
- 08-14 Subaru Impreza WRX
- 08-14 Subaru Impreza WRX STi
- 15-21 Subaru WRX STi
Measurements
- AOS Height: 6.94" (top of dipstick to bottom of AOS)
- AOS Diameter: 3.45" Round
- AOS Capacity: 20.3 oz (600mL)
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 Air Oil Separator
- -Subaru specifically designed mounting bracket
- -All necessary SAE J30R7 rated PCV/Emissions hose
- -Coolant hoses and fittings
- -All necessary aluminum fittings and hose-ends
- -Stainless steel mounting hardware
*For 02-05 Subarus with a cable-actuated throttle body, our Cruise Control Relocation Bracket must be used.
*If operated in freezing environments, Radium Engineering recommends installing insulation sleeving (not included) over any hose exposed to cold air flow. This will help prevent the natural phenomenon of water condensation freezing and potentially clogging the hose.
*For RHD vehicles, our Universal AOS-R must be used for custom mounting and plumbing.
*The Radium AOS-R kit may not be compatible with all other aftermarket products.
To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.
Depending on the package, we ship using different carriers according to the item's location, content, and size.
Freight truck & international items, will require up to 7 business days to ship due to size and logistics.
All orders made after 3:00pm ET will be shipped or processed the next business day.
Unless otherwise noted as "In Stock" or exact ETA. Special order/ Made to order items have an estimate of 5+ weeks for USA made parts and 10+ weeks for JDM/ Overseas parts.
Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.
All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.
Processing and logistics on in stock international orders can take up to 7 business days to process & ship.
In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.
WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to www.P65Warnings.ca.gov/passenger-vehicle.
Radium Air Oil Separator AOS-R Kit for Subaru 09-13 XT, 08-14 WRX, 08-21 STi
