Overview Coolant overflow tank: used to collect the portion of coolant that overflows during thermal expansion and contraction, prevent coolant loss, and maintain stable pressure in the cooling system. Compatible with: Lexus GX470 4.7L 2003-2009 Toyota 4Runner 4.0L 2003-2009 Toyota 4Runner 4.7L 2003-2009 Toyota FJ Cruiser 4.0L 2007-2009 Advantage 1、Prevent coolant loss: By collecting excess coolant, prevent coolant leakage into the external environment. 2、Maintain system pressure: Maintain pressure balance within the cooling system to prevent malfunctions caused by excessive or insufficient pressure. .
