GrimmSpeed Electronic 3-Port Boost Control Solenoid 2015-2021 Subaru WRX

An Elegantly-Engineered Solution. If you've been in the Subaru game for long, you're probably well aware that a 3-port Electronic Boost Control Solenoid (EBCS) is considered by most to be a 'must have' improvement before having your car tuned. GrimmSpeed has become the trusted brand in the EBCS market, with tens of thousands of solenoids in operation today across the globe. The 2015-21 WRX offers a unique change of pace, as the factory 2-port solenoid is mounted directly to the plastic turbo inlet and interfaces with an o-ringed feature, rather than a vacuum hose. With expertise in designing machined parts and a tried and true boost control solenoid, we were excited to dig in and create a solution with an already proven pedigree of high performance and quality. Quick Specs Custom Machined Adapter - Makes use of the factory inlet port, sealed w/ VITON O-Ring Black Anodized Finish - Protects the assembly from corrosion in an extremely demanding environment 1/4in Barbed Fittings – Z