A sea water pump is a crucial component of cooling system. As the name suggests, it pumps sea water into the engine to regulate its temperature and prevent overheating. The pump is typically located near the front of the engine and is driven by a belt connected to the crankshaft pulley. It features an impeller that spins rapidly, drawing in water through an inlet hose and forcing it out through a discharge hose to circulate throughout the engine block. This constant flow of cool water helps dissipate heat generated by combustion, ensuring optimal performance and longevity of the engine. A malfunctioning sea water pump can cause catastrophic damage to the engine and should be promptly replaced if any issues arise.