Mishimoto Aluminum Coolant Overflow Tank Black 2008-2021 WRX / 2008-2021 STI

Replace the flimsy factory plastic overflow tank with a cleaner, stronger, and far better-looking solution. The Mishimoto Coolant Overflow Tank for the 2008–2021 Subaru WRX and STI is built from fully TIG-welded aluminum, offering exceptional durability through repeated heat cycles while giving your engine bay a premium upgrade in appearance.

Each tank includes a CNC-machined dipstick for quick and accurate coolant-level checks, and it installs in under 30 minutes with no modifications required. Available in either a polished finish or anodized black, this tank complements both stock and Mishimoto radiators and blends seamlessly with any engine bay style.

Features:

• Direct fit for 2008–2021 Subaru WRX/STI
• Quick, hassle-free installation (under 30 minutes)
• Fully welded all-aluminum construction for long-term durability
• CNC-machined dipstick for accurate coolant-level checks
  
• Includes black Mishimoto fill cap