SKU: COBB712750 Cobb 3-Port Boost Control Solenoid for WRX/STI, Forester XT

Cobb 3-Port Boost Control Solenoid for WRX/STI, Forester XT

The COBB 3-Port Boost Solenoid (BCS) is the perfect upgrade for modern turbocharged vehicles, delivering precise and stable boost control in a compact and easy-to-install package. Designed to eliminate the boost fluctuations common with OEM systems, the COBB BCS ensures consistent and repeatable performance, whether at stock boost levels or the extreme boost pressures of high-power builds.

Engineered for durability and efficiency, the BCS features low-profile 1/8" nickel-coated barb fittings for corrosion resistance, with optional 1/4" fittings available separately. The unit incorporates Viton spools and seals for long-lasting operation, waterproof construction with ultrasonically welded solenoid wires, and a sealed manual override. Operating up to 120psi, this boost control solution is both reliable and robust, making it an essential component for serious tuners.

Installation is seamless thanks to a custom aluminum mounting bracket, stainless steel hardware, and direct compatibility with the stock wiring harness. Included boost lines, zip-ties, and detailed instructions ensure easy routing for both internal and external wastegate setups. COBB Tuning’s thoughtful design makes upgrading your boost control system straightforward and effective.

Unlock the full potential of your turbocharged Subaru with the COBB 3-Port BCS, engineered for consistent performance, extended service life, and unmatched control. Elevate your tuning experience today!

Important Note About Vehicle Fitment

Our vehicle fitment selection tool is currently in development, and we’re working hard to ensure the accuracy of our data. While most models and trims should be correct, there may be some instances where fitment information is incomplete or an alternative option is available.

If you’re unsure about the compatibility of a part with your vehicle, please don’t hesitate to reach out to us for assistance. Our team is here to help you find the perfect fit!