COBB bypass valve is specified for 2015–2018 Subaru WRX and 2014–2018 Forester XT (FXT) with the LF platform as listed in the description. The unit serves as the turbocharger bypass component for those model years and applications, matching the explicit vehicle fitment provided in the product listing.
Cobb 15-18 Subaru WRX / 14-18 FXT LF By-Pass Valve