Subaru WRX STI Coolant Overflow Tank - COBB - `15-`21
Subaru WRX STI Coolant Overflow Tank - COBB - `15-`21
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Subaru WRX STI Coolant Overflow Tank - COBB - 2015–2021. A purpose-built replacement reservoir that manages coolant expansion and recovery for your 2015–2021 WRX or STI.
Engineered by COBB for the 2015–2021 platform, this tank fits cleanly and helps keep coolant levels consistent on spirited drives or daily commutes. It captures expansion and returns fluid as temps drop, supporting stable operation. Durable construction makes it a practical, fuss-free upgrade.
Features
- Vehicle-specific fit for 2015–2021 Subaru WRX/STI
- Aids expansion/recovery for consistent coolant levels
- Durable, enthusiast-grade build
- OE-like placement; install-friendly design
Questions? Call Austin, Texas 512-982-9393 or Los Angeles, California area 562-981-6800. We offer installation and customization at both locations and can help plan your setup.
Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
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Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
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