SKU: B822615 | UPC: 700424680313
Cobb 08-14 Subaru WRX / 08-20 STI Air Oil Separator
The Cobb Air Oil Separator captures oil mist and vapor from the PCV system and turbo breather before it reaches the intake tract. Designed for 2008-2014 Subaru WRX and 2008-2020 STI models, it keeps charge air clean to support consistent power delivery and engine protection. Regular draining prevents oil accumulation in intercoolers and throttle body.
Key Features
- Billet 6061-T6 Aluminum Body: Provides strength and corrosion resistance with a durable black anodized finish and laser-etched Cobb logo.
- 3 oz Capacity: Holds substantial oil volume for extended track sessions or spirited driving without frequent emptying.
- Stainless Steel Mesh Filter: Captures fine oil particles effectively and cleans easily for repeated use.
- Integrated Check Valve: Blocks oil pull-through during deceleration, ensuring reliable separation under all conditions.
- 4AN Fittings and Mounting Hardware: Ensures secure hose connections and simple bolt-on installation with provided bracket.
Product Notes
- Drain reservoir every 1,000 miles or after track days to maintain performance.
- Compatible with stock and aftermarket intake systems on EJ25 and FA20/24 engines.
Installation Notes
- Professional installation recommended.
- Bolt-on design mounts to factory battery tray location using included hardware.
- Route hoses from PCV valve and turbo inlet pipe no cutting required on stock setup.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2014 | Subaru | Impreza WRX | All |
| 2008-2014 | Subaru | Impreza WRX STI | All |
| 2015-2020 | Subaru | WRX STI | All |
Why Choose Cobb?
- Developed through extensive dyno and track testing on Subaru platforms.
- Precision CNC-machined components for exact fit and function.
- Proven design used in professional racing applications.
Frequently Asked Questions
- Q: Will this fit 2015-2020 STI models?
A: Yes, it installs directly on 2008-2020 STI with EJ257 or FA24F engines using factory breather locations. - Q: What material is used in construction?
A: High-grade 6061-T6 billet aluminum with anodized finish for longevity and heat resistance. - Q: What is the warranty and service interval?
A: Backed by Cobb’s 1-year warranty service filter and drain oil every 1,000 miles.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective box, 10″ x 8″ x 6″ dimensions
- Weight: 2.8 lbs
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