034-101-5004 - 034Motorsport Valve Cover Breather Adapter, 2.0T FSI, Catch Can Provision With Nipple Fittings034 Motorsport Valve Cover Breather Adapter, 2. 0T FSI, Catch Can Provision With Nipple Fittings DIY breather port adapter to allow a provision for custom catch can setups on the Audi Volkswagen 2. 0T FSI such as EA113. Features: CNC Machined from solid 6061 aluminum Allows stock breather port to clip right on 21mm OD (11mm ID) inlet and outlet male bungs Allows oil fumes from valve cover area to be sent out to a catch can before being returned to the