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COBB 3-Port Boost Control Solenoid 2002-2007 WRX / 2004-2007 STI / 2004-2008 FXT

SKU 712750
Original price $175.00 - Original price $175.00
Original price
$175.00 - $175.00
Current price $175.00

The COBB 3-Port Boost Solenoid (BCS) is an excellent upgrade for modern turbocharged vehicles, enabling precise boost control in a tidy package that is easy to install and tune. This BCS will eliminate boost fluctuations and boost creep inherent in the OEM boost control system, providing stable and repeatable boost control to base the vehicle's tune on. It is equally capable of providing this stable boost control at stock boost levels as well as extremely high boost levels associated with big-power builds.

The COBB Tuning 3-Port BCS features 1/8" low-profile barb fittings to keep the unit compact and are nickel coated for corrosion resistance. Optional 1/4" nickel plated fittings are also available separately. Viton spools and seals are used throughout for long life and lubricated with Dow Corning silicone grease. The manual override is sealed with an O-ring, the wiring harness is sealed to the casing using a waterproof grommet and the solenoid wires are ultrasonically welded to the coil, making the device waterproof and safe to wash. The BCS is rated to operate up to 120psi.

COBB Tuning has made the COBB 3-Port BCS installation as simple as possible. It mounts in the stock location and plugs directly into the stock wiring harness, making the physical install and electrical connection as simple as possible. The BCS comes with a custom aluminum mounting bracket, stainless steel hardware, boost-line to complete all connections and zip-ties to route the boost-line neatly through the engine bay. Installation Instructions are provided, are easy to understand, and provide routing instructions for both internal and external wastegate configurations.


  • Accurate and Consistent Boost Control
  • Plug and Play
  • 18-Gauge Wiring Harness
  • 1/8" Nickel Plated Barbed Fittings
  • Rated up to 120psi
  • Custom Aluminum BCS Mount

Customer Reviews

Based on 7 reviews
Christian martinez
Boost controller

Great product never had issues with anything from Cobb.


Thank you so much for leaving a 5 Star Review! We are thrilled to hear that you have had a great experience with our COBB 3-Port Boost Control Solenoid. Subimods prides ourselves on providing high-quality products that our customers can trust. We appreciate your support and look forward to serving you in the future. Have a great day!


Mark Williams
Great product super easy install .The only place I get my subi parts A+++

Awesome product super easy install.This is the only place I get my subi parts


We appreciate your 5 Star Review of the COBB 3-Port Boost Control Solenoid! We are thrilled to hear that you consider it a great EBCS with a super easy installation! Your loyalty to Subimods is greatly appreciated, and we are honored to be the only place you trust for your Subaru parts! Enjoy!


Awesome product

As always Cobb provided and then some! I ordered this 3 port kit to eliminate the poorly designed plastic T and alleviate some boost surge issues on my 2007 wrx fitted right up in about 10 minutes and they even sent me new vacuum line with it! Sadly this controller doesn't come with instructions but a quick google search will tell ya which port should line up to which line!


Thank you for sharing your experience with the COBB 3-Port Boost Control Solenoid for your 2007 WRX. It is great to hear that it solved your boost surge issues and that the installation was straightforward. Manufacturers like COBB often provide quality products and sometimes additional components or accessories, making the installation process smoother. Your insights into using a quick online search for installation guidance are also helpful for others considering this upgrade. We appreciate your 5 Star Review! Enjoy the improved performance of your WRX!


Brandon Wilson
Pleased but I only needed one

Can I return one of the EBCS I purchased one for a family member who did not need it. It's still in the box unused. But I do need an AEM 340lph fuel pump for my 03 wrx


Thank you for your 5 Stars. I have included a link to the Subimods Refund policy that has a link for returns. Give the Subimods Team a call, and we can get you set up with a fuel pump!


Jesse Longden
EBCS Cobb 07 wrx

Great product can actually feel the difference while driving and the 3 port eliminates the tea fittings and have direct air flow from each line instead of losing pressure from the t fittings I recommend this for your upgrade and if you have the Cobb tuner like I do you can correspond with it and change many settings when you hook up the Cobb Access port to a computer overall amazing product to have and a must have with your upgrades


We appreciate your 5 Star Review and added pic! It is great to hear that you are satisfied with the COBB 3-Port Boost Control Solenoid for your 07 WRX. It is great to know that you can feel the difference in performance while driving and that the 3-port design eliminates the need for T fittings, ensuring direct airflow from each line and maintaining pressure. The ability to correspond with the Cobb tuner and adjust settings through the Cobb Accessport is a valuable feature!


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