Subaru WRX STI Coolant Overflow Tank - COBB - With Washer Fluid Relocation Kit - 2004–2007. Purpose-built for the GD-chassis WRX and STI, this kit replaces the factory overflow tank and relocates the washer reservoir to open up usable space while keeping both systems functioning properly.

Designed by COBB for a tidy, reliable under-hood layout, the compact reservoirs and vehicle-specific placement help clear tight spots when adding larger intercoolers, intakes, or custom piping. Coolant expansion and windshield washing functions remain consistent, with routing intended for a clean, serviceable result that supports routine maintenance and future upgrades.

Features

• Fits 2004–2007 Subaru WRX/STI (GD)
• Replaces factory coolant overflow tank
• Includes washer fluid relocation kit
• Space-efficient packaging for common upgrades
• Vehicle-specific fitment with organized routing

Have questions about fitment or your build plan? Call our Austin, Texas team at 512-982-9393 or our Los Angeles, California area shop at 562-981-6800. We have two locations and offer installation and customization services at both. If you are considering multiple items, contact us for potential shipping discounts. We install on premises at both locations.

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