1-21480078-1 TANK SURGE RAD For HITACHI FSS 6BG1

The tank surge RAD (Radiator Surge Tank) is an essential component in a vehicle’s cooling system, designed to manage the thermal expansion and overflow of coolant as engine temperature fluctuates. It serves as a reservoir that collects excess coolant when pressure builds up in the radiator during engine operation and returns it once the system cools down, helping to maintain optimal coolant levels and prevent overheating. This component also allows trapped air to escape from the cooling system, ensuring efficient heat transfer.

The tank surge RAD (short for radiator surge tank) is a key component in an engine’s cooling system, designed to manage the expansion and overflow of coolant as it heats up during engine operation. It serves as a pressurized reservoir that absorbs excess coolant, helps maintain consistent pressure, and allows air bubbles to escape from the cooling circuit, which improves system efficiency and prevents overheating.

The TANK SURGE RAD (Radiator Surge Tank) is a pressurized reservoir used in modern engine cooling systems to handle excess coolant caused by thermal expansion. As the engine heats up, coolant expands and flows into the surge tank, which helps regulate pressure within the cooling system and prevents coolant from being lost through overflow. When the engine cools down, the coolant is drawn back into the radiator, maintaining a closed-loop system and optimal fluid levels.