Moroso 06-07 Subaru WRX/04-07 WRX/STi Air/Oil Separator Catch Can - Billet Aluminum

This is the Moroso 85484 Billet Aluminum Air/Oil Separator Catch Can, specifically designed for the 2004-2007 Subaru WRX and WRX STI models. On turbocharged engines like yours, the crankcase can build up pressure and push oil vapor into the intake system. This catch can intercepts that oil vapor before it can contaminate your intake and intercooler, helping to keep your engine running cleaner.

Moroso built this catch can from solid billet aluminum, which is strong and resists corrosion. It features an internal baffle system designed to help separate the oil from the air effectively. The can is designed to be a direct fit for the specified Subaru WRX and WRX STI models, meaning it bolts on without needing extensive modifications. It includes a drain valve at the bottom for easy maintenance, allowing you to empty the collected oil without removing the entire unit. Keeping your intake tract free of oil can lead to more consistent performance and potentially extend the life of engine components.

When installing, you'll want to make sure you have the necessary tools to access the crankcase ventilation system. Refer to the manufacturer's installation instructions for the most accurate guidance on placement and connection. Regularly draining the collected oil is key to its effectiveness, so check it periodically, especially if you notice increased oil consumption or performance changes.