A fuel filter is a crucial component in a vehicle's fuel system. Its primary function is to remove impurities and contaminants from the fuel before it reaches the engine. This helps ensure that the engine runs smoothly and efficiently, preventing damage and maintaining performance. Regularly replacing the fuel filter is important for vehicle maintenance. A clogged filter can restrict fuel flow, leading to poor engine performance, reduced fuel efficiency, and potential engine damage. Keeping the fuel filter clean supports the overall health of the vehicle's engine and fuel system.