The Mishimoto direct-fit baffled oil catch can for 2018+ Audi B9 S4 and S5 3.0T installs inline with the PCV system to trap oil and fuel vapors before they reach intake components. The compact two-port can uses a 50-micron bronze filter, includes direct-fit hoses, one-way check valves, and a petcock drain for simple servicing, and installs in under 30 minutes. It is covered by Mishimoto’s lifetime warranty.
Mishimoto 18+ Audi B9 S4/S5 Baffled Oil Catch Can- PCV Side