3-Port Boost Control Solenoid

The Cobb 3-Port Boost Control Solenoid (BCS) is an upgrade for modern turbocharged vehicles, enabling precise boost control through the factory ECU. The solenoid features Viton spools and seals for longevity and is constructed to be waterproof. Construction includes 1/4" low-profile, nickel-coated barb fittings for a compact design and corrosion resistance. The unit utilizes a sealed manual override, a waterproof grommet for the wiring harness, and ultrasonically welded wires for durability. It is rated to operate up to 120psi. The kit includes a billet aluminum mounting block, stainless steel hardware, boost line, and zip ties. Installation instructions are provided, covering both internal and external wastegate configurations. **Vehicle Fitment:** This solenoid is designed for 2015-2021 Subaru WRX models. It is important to note that it **will not fit some northern vehicles equipped with the Subaru OEM cast aluminum turbo inlet**, and it will not fit Canadian cars with the cast inlet. **Important Considerations:** CUSTOM TUNING IS REQUIRED. The COBB 3-Port BCS is supported in select COBB Off The Shelf Maps. For safe and optimal performance, please contact your preferred Protuner for custom tuning.