Mishimoto Aluminum Coolant Overflow Tank - 2008-2021 STI

The Mishimoto Aluminum Coolant Overflow Tank is an all-aluminum, fully welded construction for supreme durability during repeated cold and hot transitions. This means you don’t have to worry about another cracked factory coolant overflow tank that can result in potential engine damage.

This is a direct-fit unit, that will come in a polished aluminum finish.