IAG Performance Subaru Parts & Engine Solutions

Built for reliability and performance on turbocharged Subaru platforms. Trusted upgrades for WRX, STI, and high-power builds.

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Engine Blocks & Internals

Short blocks and long blocks engineered for strength, boost, and long-term Subaru reliability.

Air & Oil Management

Air Oil Separators and supporting systems that reduce blow-by and protect turbo Subaru engines.

Reliability First

Performance upgrades designed to solve common Subaru engine failure points before adding power.

Subaru-Specific Design

Components designed specifically for WRX and STI platforms — not adapted from generic parts.

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Browse IAG Performance components by category to find the right solution for your Subaru build.

IAG Short Blocks

Performance-built short blocks engineered to handle increased boost and address common Subaru engine failure points..

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IAG Long Blocks

Complete long block solutions for high-horsepower builds, engine replacements, and turnkey Subaru performance setups.

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Air Oil Separators

Reduce oil blow-by and protect your engine under boost with IAG air oil separator systems, designed for turbocharged Subaru engines.

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Popular IAG Performance Products

These IAG Performance components are frequently chosen by Subaru owners for reliability-focused builds and performance upgrades.

Subaru Engine Guides & Resources

Learn more about Subaru engine reliability and performance upgrades to make informed build decisions.

Subaru

Reliable 400whp EJ257 STI Build – Proven Power Recipe

Achieving a reliable 400whp Subaru STI with the EJ257 engine is one of the most common and proven performance goals in the Subaru community. When done correctly, this power level delivers strong…

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Subaru

Is a WRX/STI Air Oil Separator Worth It?

Essential Insights for WRX & STI Owners If you drive a Subaru WRX or STI, protecting engine health while preserving performance should always be a priority. One of the most commonly recommended…

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Not Sure Which IAG Parts Fit Your Build?

Choosing the right engine or reliability upgrade depends on your goals and setup. Our team can help you select the right IAG Performance components for your Subaru.

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