Moroso 04-07 Subaru STi (w/Front Mount Intercooler) Air/Oil Separator Catch Can - Billet Aluminum

This is the Moroso 85654 Air/Oil Separator Catch Can, specifically made for 2004 through 2007 Subaru STi models that have a front mount intercooler installed. Your STi's engine can produce blow-by gasses that carry oil vapor, which can then get recirculated back into the intake system. Over time, this oil can build up on your intercooler and intake tract, reducing efficiency and potentially causing issues.

This catch can is constructed from solid billet aluminum, making it a well-built component designed to handle the demands of your performance Subaru. It works by trapping the oil vapor from the crankcase gasses before they can reach your intake. The collected oil can then be drained periodically, keeping your intake system cleaner and your engine running more efficiently. The direct fit design means it's made to install cleanly with your existing setup, assuming you have the front mount intercooler already in place.

Keeping your intake free of oil buildup is important for maintaining optimal performance, especially in a car like the STi. This Moroso catch can is a solid option for Subaru owners looking to manage blow-by gasses effectively.