Subaru WRX STI By Pass Valve - COBB - 04–17. Purpose-built for Subaru turbo applications, this COBB bypass valve/adapter delivers dependable, recirculating boost relief for enthusiast-driven cars.

Designed for the 2004–2017 WRX STI and 2002–2007 WRX, it integrates with the factory recirculation path to help curb compressor surge between shifts and maintain stable drivability on MAF-based setups. COBB’s precise fit and thoughtful engineering make it a smart choice when refreshing aging OE hardware or preparing a build for consistent, repeatable performance.

Features

• Fitment: 2004–2017 Subaru WRX STI; 2002–2007 Subaru WRX
• Recirculating bypass function helps reduce compressor surge
• COBB quality and application-specific design
• Integrates with factory-style plumbing
• Suitable for street and track-focused builds

Have questions about compatibility or setup? Call us—our team can guide your purchase and schedule installation and customization at our Austin, Texas and Los Angeles, California area locations. TX: 512-982-9393, CA: 562-981-6800.

Thinking about multiple items? Contact us for shipping discounts. We install on premises at both locations.

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