COBB Air/Oil Separator Subaru WRX 2006-2007 / STI 2004-2007
DESCRIPTION
- Heat Shielding on Crankcase Breather and Oil Return Lines
- Coolant Bleeder Valve
- Bespoke COBB Color Combination
- Laser Etched COBB Logo
The Subaru EJ 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
WHY?
FEATURES
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Subaru | Impreza | STi | 2004 | 2007 | ||
| Subaru | Impreza | WRX | 2006 | 2007 |
COBB Hard Parts
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COBB Tuning is an automotive engineering company dedicated to developing solutions that improve vehicle performance and the driving experience. COBB Tuning approaches design by taking the entire vehicle-platform into account as a complete system. COBB's ultra-high-quality products and services are professionally engineered, thoroughly tested and backed by industry leading customer service to ensure that they meet our objectives and exceed customer expectations. Famous for their Accessports, COBB Tuning has expanded its product offerings to BMW, Ford, Mazda, Porsche , Mitsubishi, Nissan and Volkswagen specializing in engine management electronics, intake tract components, turbocharged exhaust systems, turbo kits, drivetrain components and suspension components.
COBB are a one-stop firm with an enviable set of qualified skills and the exceptional ability to design, engineer, manufacture, test and service our own products under one roof. Whether it’s our state-of-the-art Accessport ECU programmer, our exceptional bolt-on performance products, COBB Tuning has the experience, skill and attitude to meet your specific needs.
