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SKU: B715750 | UPC: 799928865326
Cobb 08-12 Subaru WRX / 08-12 STI Hatch / 11-12 STI Sedan 3-Port Boost Control Solenoid
Replace your factory 2-port solenoid with the Cobb 3-Port Boost Control Solenoid for sharper boost response and reliable control on 2008-2012 Subaru WRX and STI models. This direct-fit upgrade works with stock or tuned ECUs, enabling stable boost up to 30 psi across EJ255 turbocharged engines. Ideal for enthusiasts chasing consistent power delivery on hatchbacks and sedans.
Key Features
- 3-Port Design: Provides vent-to-atmosphere operation for faster spool and reduced boost lag compared to OEM 2-port setups.
- Plug-and-Play Fit: Uses factory connector and mounting location for easy install without wiring modifications.
- High-Flow Valve: Handles elevated boost pressures while maintaining duty cycle accuracy for smooth power curves.
- Durable Construction: Brass body and reinforced diaphragm resist corrosion and wear in harsh underhood conditions.
- Universal ECU Compatibility: Functions with Cobb Accessport maps, open-source tunes, or factory systems.
Product Notes
- Pair with Cobb SF Intake or FMIC for full boost optimization.
- Verify boost source line routing during install to avoid leaks.
- Securely package unused hardware to prevent loss.
Installation Notes
- Professional installation recommended.
- Disconnect battery before swapping solenoid to reset ECU adaptations.
- Mounts to OEM bracket with included hardware no drilling required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2012 | Subaru | Impreza | WRX |
| 2008-2012 | Subaru | Impreza | WRX STI Hatchback |
| 2011-2012 | Subaru | Impreza | WRX STI Sedan |
| 2008-2014 | Subaru | Impreza | WRX STI |
| 2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2005-2006 | Subaru | Outback | XT |
| 2005 | Subaru | Outback | XT Limited |
| 2007-2009 | Subaru | Outback | XT Limited |
| 2015 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015 | Subaru | WRX STI | Limited |
| 2005-2006 | Subaru | Legacy | GT |
| 2005 | Subaru | Legacy | GT Limited |
| 2007-2009 | Subaru | Legacy | GT Limited |
| 2006-2009 | Subaru | Legacy | GT spec.B |
| 2009 | Subaru | Forester | XT |
| 2009-2010 | Subaru | Forester | XT Limited |
| 2010-2013 | Subaru | Forester | XT Premium |
| 2011-2013 | Subaru | Forester | XT Touring |
| 2008-2014 | Subaru | Impreza | WRX |
| 2010-2014 | Subaru | Impreza | WRX Limited |
| 2009-2014 | Subaru | Impreza | WRX Premium |
Why Choose Cobb?
- Leaders in Subaru tuning since 1998 with proven track record.
- Engineered components tested on dyno and track.
- Direct bolt-on design from factory-calibrated specs.
Frequently Asked Questions
-
Q: Will this fit my 2010 STI hatchback?
A: Yes, direct replacement for 2008-2014 Impreza WRX STI hatchbacks using EJ255 turbo. -
Q: What material is the solenoid body?
A: Machined brass housing with EPDM diaphragm for heat and oil resistance. -
Q: Does it require tuning after install?
A: No tuning needed for stock boost, but recalibrate maps for boost targets over 20 psi.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Compact box, 6 x 4 x 2 inches
- Weight: 0.4 lbs
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