Subaru STI Coolant Overflow Tank - Perrin Performance - CNC-machined - Black - 04-21. Replace the stock plastic overflow bottle with a precision CNC-machined PERRIN tank finished in black for a clean, durable engine-bay upgrade.

Designed specifically for 2004–2021 STI models, this PERRIN coolant overflow tank offers a direct-replacement fit that keeps factory mounting points and cap compatibility. The CNC-machined construction provides greater rigidity and resistance to heat and wear compared with the OEM plastic unit, while maintaining straightforward installation using existing hoses and brackets. Ideal for enthusiasts who want a durable, long-lasting component that improves the look and function of the engine bay without major modifications.

Features

• CNC-machined construction for consistent fit and finish
• Black finish to match performance engine-bay components
• Direct fit for 2004–2021 Subaru STI models
• Uses factory cap and mounting points for easy installation
• More durable and heat-resistant than OEM plastic overflow tanks

If you have questions about fitment or compatibility, call us and we’ll help confirm fit for your car. We offer installation and customization services at both our Austin, Texas and Los Angeles, California area locations; call 512-982-9393 (TX) or 562-981-6800 (CA) to schedule. If you’re thinking about purchasing 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