3-Port Boost Control Solenoid

The COBB Tuning 3-Port Boost Control Solenoid (BCS) is an upgrade for turbocharged vehicles, enabling precise boost control. It replaces the OEM system to eliminate boost fluctuations and provide stable, repeatable control for stock or high-power applications. The unit features 1/4" low-profile, nickel-plated barbed fittings for a compact installation. For durability, it uses Viton spools and seals lubricated with silicone grease. The solenoid is built to be waterproof, with a sealed wiring harness grommet and ultrasonically welded coil wires, making it safe for washing. Key features include accurate and consistent boost control, a plug-and-play 18-gauge wiring harness, 1/4" nickel-plated barbed fittings, and a rating up to 120psi. The BCS also includes a billet aluminum mount for installation. Installation Note: This component requires tuning. Specific hardware considerations may arise if paired with a Cobb turbo inlet, as the provided screws may require replacement with longer ones, and supplied clamps may not fit the included hose. Professional installation is recommended if you are not comfortable performing it yourself. Applications: This boost control solenoid is designed for the 2015-2021 Subaru WRX.