Product Introduction Coolant Overflow Tank is a core auxiliary component of the automotive cooling system. Its main function is to accommodate the expansion of the coolant due to temperature rise, prevent coolant loss due to pressure imbalance, stabilize the internal pressure of the system, and ensure engine heat dissipation efficiency. Compatible with: Nissan Frontier 2.5L 2008-2019 Nissan Frontier 4.0L 2008-2019 Nissan Xterra 4.0L 2008-2015 Advantages Analysis .