The CTS Turbo 1" breather filter (rubber base) is designed for use on secondary air injection systems with 1" slip fit connections.
This breather filter is included in our CTS-IT-300 and CTS-IT-300R intake kits. Can also be used in custom applications when a small breather filter is required, such as for custom catch can kits.
This part also goes by the following cross reference.
Cross Reference Part Number: