Subaru

Subaru Air/Oil Separator WRX 2015-2019

$ 470.00

Availability: Ships in 24 hours
Product Code: 843600

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Description

The COBB Air/Oil Separator is placed within your Subarus crankcase ventilation system and helps to prevent oil vapors from being introduced into the intake system. The COBB Air Oil Separator has been developed in partnership with IAG Performance and offers exclusive features.

  • Heat Shielding on Crankcase Breather and Oil Return Lines
  • Coolant Bleeder Valve
  • Bespoke COBB Color Combination
  • Laser Etched COBB Logo


The Subaru FA engine has 3 ports that vent crank pressure: one on each cylinder head and another on the top of the block. Each engine vent port receives its own connection to the AOS. By giving each engine port its own entrance to the AOS we have allowed for more effective and faster excavation of crankcase pressure. Additionally, this reduces overall system pressure. With a 4" OD and 5.75" height, the AOS has an approximate 1 liter of holding capacity. The larger the AOS, the more power you can safely make without having to worry about the AOS overfilling.

The bottom of the AOS is shaped like a snail, redirecting positive crank pressure into the same swirl pattern produced by the 3 side ports. Allowing maximum oil drainage while separating oil from the air in all the venting ports.

The back plate of the AOS features a unique coolant routing system that heats the entire AOS to the same temperature of the engine. This maximizes the evaporation of any water collecting inside of the can. The hotter the AOS, the less water will collect inside and mix with the oil.


Why?

The COBB Subaru Air/Oil Separator helps to prevent crankcase oil vapors from recirculating back through your engine's intake system.

Oil vapors passing through your engine's intake system lower the effective octane rating of fuel and can contribute to both oil and carbon buildup over time.


Features
Subaru Air/Oil Separator WRX 2015-2019
  • Billet Aluminum Tank Design
  • Bespoke COBB Anodizing on Caps
  • Wrinkle Black Powder Coated Canister
  • Laser Etched COBB Logo
  • Developed in Partnership with IAG Performance

Customer Photos

Reviews
Subaru Air/Oil Separator WRX 2015-2019 is rated 4.0 out of 5 by 2.
Rated 4 out of 5 by from Great product, better explanation Bought this a few days ago, self install fairly easy. Did the install in about 4.5 hours. The installation says for 2017-2018. But things definitely were different from a 2017 to a 2018 WRX. The ECU relocation bracket wasn't needed, brake lines did not need to be pryed for more space. And the breather fitting from the block definitely is different on a 2018.
Date published: 2018-04-06
Rated 4 out of 5 by from Nice Solid Product!! I love this Aos I bought it for my 2018 Wrx, Very easy to install
Date published: 2018-07-11
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