IAG Oil Catch Cans for Subaru WRX & STI

Engineered oil catch cans and Air Oil Separator (AOS) systems designed to reduce carbon buildup, improve reliability, and support performance Subaru builds.

IAG Oil Catch Cans and AOS Systems for Subaru Builds

IAG Performance oil catch cans and Air Oil Separator (AOS) systems are designed specifically for turbocharged Subaru platforms, including the Subaru WRX and STI. By separating oil vapor from crankcase ventilation gases, these systems help reduce intake contamination, protect intercooler efficiency, and maintain consistent combustion under boost.

Whether you are maintaining a daily-driven WRX or building a high-performance setup, an IAG oil catch can or AOS system plays a critical role in long-term engine health and reliability.

Unlike universal kits, IAG systems are engineered with application-specific mounting brackets and hose routing for proper integration and clean installation.

Compare IAG Catch Can Options

Choosing the right oil catch can or AOS system starts with your Subaru platform and overall build goals.

IAG Street Series AOS

Ideal for daily-driven WRX and STI builds.

Recirculates oil vapors back into the system
Maintains emissions-friendly operation
Reduces intake contamination
Ideal for street and lightly modified builds

View IAG Street Series Systems

IAG Competition Series AOS

For track-focused and higher-boost Subaru builds.

Vent-to-atmosphere oil control design
Built for aggressive driving and track use
Handles high crankcase pressure under boost
Best for heavily modified applications

View IAG Competition Series Systems

IAG Oil Catch Can and AOS Systems for Subaru WRX & STI

Explore available IAG oil catch cans and Air Oil Separator (AOS) systems below, organized for Subaru WRX, STI, and related turbocharged Subaru platforms.

IAG Street and Competition Series AOS Systems

Subaru-specific oil catch can and AOS solutions engineered for street, track, and high-boost applications.

What Makes IAG Oil Catch Can and AOS Systems Different?

Turbocharged Subaru engines are known to push oil vapor through the crankcase ventilation system, making oil catch cans and AOS systems essential for maintaining performance and long-term reliability.

IAG oil catch can and AOS systems are engineered specifically for Subaru applications, with platform-matched mounting, hose routing, and internal separation design. Rather than relying on universal-fit components, IAG systems are built to integrate properly with the engine bay and perform consistently under real-world driving conditions.

For Subaru owners focused on reliability, drivability, and cleaner oil control under boost, IAG remains one of the most trusted names in the platform.

Subaru Applications for IAG Oil Control Systems

Choosing the right oil catch can or AOS setup starts with your Subaru platform and overall build goals.

IAG systems are commonly available for:

Each platform has different crankcase ventilation needs depending on turbo setup, intended use, and supporting modifications. If you are unsure which oil control system fits your vehicle best, start with your Subaru model and build type before selecting the correct IAG solution.

You can also explore additional support through our Subaru WRX and Subaru STI performance collections.

Frequently Asked Questions About IAG Oil Catch Cans and AOS Systems

Do I need a tune after installing an IAG AOS?

Most Street Series systems do not require retuning when installed on otherwise stock vehicles. However, modified builds should always verify that the overall crankcase ventilation and tuning strategy remain appropriate for the setup.

What is the difference between a catch can and an AOS?

A traditional catch can stores separated oil in a container that must be drained manually. An Air Oil Separator continuously separates oil vapor and returns the oil to the crankcase, making it a lower-maintenance solution for many Subaru owners.

Is an IAG oil control system worth it on a stock Subaru?

It can be. Even on lightly modified or stock turbocharged Subaru platforms, reducing oil vapor in the intake system may help improve long-term cleanliness and reduce carbon-related issues over time.

Will an IAG AOS help reduce carbon buildup?

Yes. By reducing the amount of oil vapor entering the intake tract, an IAG Air Oil Separator can help minimize carbon deposits, especially on direct-injection turbocharged Subaru engines.

Supporting Mods for Subaru Oil Control Setups

Upgrading to an IAG oil catch can or AOS is most effective when the rest of the Subaru system is properly supported.

Recommended supporting upgrades include:

Explore compatible IAG Performance parts to build a properly matched Subaru setup.

Why Buy Your IAG Oil Catch Can from Wrench Masters?

At Wrench Masters, we specialize in Subaru performance platforms and supporting upgrades that work together as a complete system.

When you purchase your IAG oil control components from us, you get:

  • Fast shipping on in-stock items
  • Access to compatible Subaru performance parts
  • Help selecting the right solution for your build
  • Experience with real-world WRX and STI upgrade paths

We help make sure your oil control setup is matched with the right supporting parts for reliable long-term performance.

Explore Related Subaru Engine Components

Engine Build Guides

If you’re planning a complete Subaru engine setup, these guides will help you understand how key upgrades work together:

Related Performance Components

To support your oil control and crankcase ventilation setup, explore: