The fuel filter keeps contaminants like dirt, water and rust out of your vehicle's engine. Some fuel filters are located inside the tank, while others are fitted into the fuel line between the tank and the fuel pump. Check your owner’s manual for specific service intervals. If your vehicle loses power, misfires or stalls, you might need a fuel filter replacement. An inexpensive fuel filter is one of the key components to protect the engine from hazardous foreign particles. It’s important to replace it when necessary to avoid expensive repairs. If the filter gets clogged, you may risk damaging your fuel pump and your fuel injectors. From a safety standpoint there is a slight risk, because a clogged fuel filter might cause you to stall unexpectedly. From an environmental point of view, replacing your fuel filter will increase your engine’s performance and help it run cleaner.