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Air Oil Separator (AOS-R) Kit, 2015+ WRX, 14-18 Forester XT - Radium – Discontinued

Sorry - this product is no longer available

Manufacturer: Radium Engineering
SKU: RA-AOSR-SUB/SAAB
434.06 EUR
Incl. 0% VAT (United States) | Change
434.06 EUR excl. VAT

Air Oil Separator (AOS-R) Kit, 2015+ WRX, 14-18 Forester XT

This kit is compatible with the following vehicles that use the FA20F engine (left-hand drive models only):

  • 2015+ Subaru WRX
  • 14-18 Subaru Forester XT 
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** DISCONTINUED **

Please note, the chosen part is discontinued and therefore most likely not available for purchase!
(You won't be able to add it to your cart)

However, if this item is still in stock at CBS Racing, you will be able to buy it!

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Note: If the part you are looking for is discontinued, don't hesitate to contact us! There might be a replacement part available or we may be able to find a Used or Second-Hand part for you.
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Air Oil Separator (AOS-R) Kit, 2015+ WRX, 14-18 Forester XT

This kit is compatible with the following vehicles that use the FA20F engine (left-hand drive models only):

  • 2015+ Subaru WRX
  • 14-18 Subaru Forester XT 

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High-powered modified Subaru engines tend to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can 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 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 CNC machined sections that screw together and are sealed with O-rings. The AOS can be completely disassembled for cleaning or servicing. 

BENEFITS

  • Effectively raises the fuel 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

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2015+ Subaru WRX Installation
The Radium Engineering AOS kit installs on the LH side of the engine bay, near the brake master cylinder. The outlet (side port) of the AOS is plumbed back to the turbo inlet pipe, creating a completely sealed system.

The AOS mounts to the Radium Brake Master Cylinder Brace, as shown below. This brace is REQUIRED for installation.

 
The PCV valve is replaced by a custom machined straight-through adapter fitting, shown below. Oil collected in the AOS drains out the bottom fitting and back into the engine block through this fitting.

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Kit Contents

  • Machined aluminum Radium Engineering Air/Oil Separator
  • Specially designed mounting bracket
  • All necessary SAE J30R7 rated PCV/Emissions hose
  • Coolant hoses and fittings
  • PCV delete fitting
  • All necessary aluminum fittings and hose-ends
  • Stainless steel mounting hardware 
  • 20-0255 Master Cylinder Brace (20-0258-00 only) 

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

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NOTE: If operated in freezing environments, Radium Engineering recommends installing insulation sleeving (not included) over any hose exposed to cold airflow. This will help prevent the natural phenomenon of water condensation freezing and potentially clogging the hose. 

We want to make sure your Toyota performs at its best, that's why we recommend using Toyota Genuine Parts. Designed, tested and approved by Toyota, they ensure superior standards of quality, maintain residual value and most importantly keep your Toyota a Toyota.


FIND YOUR TOYOTA & LEXUS OEM PARTS

Locating the right OEM parts for your Toyota and Lexus vehicles is now easier with CBS Racing's Toyota & Lexus OEM catalog. Follow these simple steps to locate and purchase the parts you need:

1. Access the Catalog Go to Catalog: Visit our website and access the Toyota & Lexus OEM catalog. Click the banner below!

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2. Search Using VIN Frame Box or Brand/Region Selection:

Option 1: Input your VIN in the Frame box for a precise search.

Option 2: Choose your brand and region, then utilize the filter to narrow down your car model.

 

3. Browse Categories and Pictures: Explore the catalog's various categories and images to easily identify your required part.


 

4. Add to Cart: Once you've found the correct part, simply click the "Add to Cart" button. This action will seamlessly redirect you to the selected part on our webshop.

 

5. Part Not Found on Webshop? No Problem! If the part is not available on our website, inform us, and we'll promptly add it for you. (In the future, we are planning to implement a feature that allows you to request or create a part automatically.)

 

Additional Assistance: For any further questions or if you need assistance in finding your parts, feel free to contact us. Our team is here to help you throughout the process.

CBS Racing OEM Catalog.


Products specifications
Product Type Engine & Powertrain
Year 2014-2018 (SJ; 4th GEN), 2011-2018 (WRX Sedan)
Make Subaru, Subaru
Model Forester, Impreza

At CBS Racing, happy and satisfied customers are our top priority.

We do not hide behind supplier or manufacturer warranty statements like: "No warranty on racing products". This is not okay! There must be a guarantee and a warranty on all products sold - they must work and fit your car as advertised.

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At CBS Racing, we strive to be the first shop of choice for our fellow car enthusiasts!
And we plan to do that by taking care of our customers the way they deserve and deliver 110% service, always!

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