Radium Engineering 2015+ Subaru WRX Air Oil Separator Kit (INCLUDES 20-0255)

rad20-0258-00

$474.95
$474.95 $499.95
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I have read Axion's store policies on returns, refunds, and cancellations. I also understand that when marked on the product page, special order items may not be canceled for any reason.

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FITS: 2015-2017 Subaru WRX

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.
  • Engine coolant must be available to be routed to AOS in order facilitate heating it so that it functions correctly.

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. This keeps the AOS warm and prevents water from condensing inside.

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.

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 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) 
Radium Engineering 2015+ Subaru WRX Air Oil Separator Kit (INCLUDES 20-0255)

$474.95

How fast is shipping?

Most orders placed on a weekday before 1pm EST will ship out the same day. Otherwise, it is common for parts to ship in 2-3 days from order date. Please note that both of these exclude special order items, which are clearly marked on product pages.

What is the returns policy?

Most products sold by Axion Industries LLC are covered by our Standard Return Policy and may be returned within 30 days of the original invoice date for a refund. Please note that a restocking fee will apply (see "Refunds Policy" in FAQ).

All returns require written approval from Axion Industries LLC. Original Shipping and return shipping charges are strictly non-refundable. For more information regarding our shipping refund policy, please refer to the "Refunds Policy" on FAQ.

Does it come with a warranty?

Axion Industries LLC does not offer any type of warranty coverage for defective products except those that are manufactured by us. However, the majority of the products available through our website are covered separately under a manufacturer's warranty.

If you recently purchased a product from Axion Industries LLC and are concerned about the fitment or performance of your item, please contact us for assistance.

Our customer service representatives can provide limited support, advice, and assistance identifying the possibility of any manufacturer defects. If we suspect your product does have serious defects, our customer service department can serve as a contact with the manufacturer to help arrange a warranty inspection and, if applicable, any necessary repairs or replacement shipments.

If you wish, you may also contact the manufacturer directly for information regarding product eligibility and specific terms and conditions of warranty coverage.

What happens if I want to cancel?

Unfulfilled, cancelled orders will require a 10%-30% cancellation fee unless you choose store credit (a 5%-15% cancellation fee will apply in this case). This fee is to:

  1. Recover the processing fees for both the order you placed and the order
    you canceled.
  2. Cancellation fees imposed by the manufacturer, should the part be coming
    straight from them. OR
  3. Restocking fees, since the part now has to be resold.

The following may NOT be canceled:

  • Orders that are already fulfilled – the Returns Policy will apply.
  • Pre-orders - the Returns Policy will apply.
  • Special Order items that were approved for sourcing by the customer.
  • Items that are on sale and labeled "final sale" during that sale period.

Please see "Order Cancellation" under FAQ for more.