The Water Transfer Connection (WTC) is a component found that facilitates the transfer of water from one area to another. It typically consists of a metal fitting with threads on either end, which connects to hoses or pipes that carry the water. The WTC is commonly used in cooling systems, where it allows for the circulation of coolant throughout the engine and radiator. It may also be found in other systems that require water transfer, such as fuel systems or hydraulic systems. Overall, the WTC plays an important role in maintaining proper functioning of a truck's various systems by ensuring efficient and reliable transfer of fluids.