Mishimoto 08-21 Subaru WRX/STI Polished Aluminum Coolant Overflow Tank - MMRT-STI-08Get that plastic blob of an overflow tank out of your engine bay. Stock plastic tanks are prone to failure due to repeated hot and cold cycles, and they create a horrible eyesore as they lurk in your engine bay. Mishimoto's 2008+ STI WRX coolant overflow tank is constructed from durable, TIG welded aluminum for optimal durability and longevity. Included with this STI WRX coolant overflow tank is a CNC machined dipstick to allow for easy checking of