Cusco Oil Catch Can | Subaru WRX STI (15-21) (6A1 009 A)Cusco Oil Catch Can Fitment: Subaru WRX STI (15 21) Part #: 6A1 009 A Overview The Cusco Oil Catch Can is a vital upgrade for Subaru WRX STI owners who want to maintain engine cleanliness and support optimal performance. Designed specifically for the 2015 to 2021 models, this high quality oil catch tank effectively captures blow by gases and unburned oil vapors that can otherwise contaminate your intake system. By installing this catch can, you help