Description:The Radiator Top Tank is located at the top of the radiator and serves as an expansion tank for the coolant. It provides additional space for the coolant to expand into as it heats up, preventing overflow and maintaining the proper pressure within the cooling system. The top tank also acts as a reservoir for the coolant when the engine is cold, ensuring the system is always properly filled.Attributes:• Durable construction with reinforced walls and hose connections.• High-temperature resistance to withstand harsh environments.• Easy inspection and maintenance.• Expansion tank for coolant to prevent overflow and maintain proper pressure.Applications: The Radiator Top Tank serves as the uppermost part of the radiator, which is responsible for regulating the temperature of the engine by dissipating heat. This support is extensively used in Cat 777D Off-Highway Truck.