US-Spec Focus STs only: COBB Tuning's Focus ST intercooler is only compatible with USDM 2013-2018 Focus STs for the North American market. The kit will not fit Euro-Spec Focus STs.
Emissions: 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number: D-660-5, D-660-29