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In the 2009 Subaru Impreza, the fuel filter can be found within the fuel tank. Fuel filters play a vital role in the fuel delivery system by keeping contaminants out of the fuel and preventing damage to the rest of the system. A faulty fuel filter can lead to engine fuel starvation, resulting in rough idling or difficulty starting. Ignoring these issues can lead to further problems over time. Replacing a fuel filter in a Subaru Impreza typically costs between $110 and $160, but the actual price may vary based on the source of the parts and where the replacement is performed.
The fuel filter for the 2009 Subaru Impreza can be found inside the fuel sending unit within the fuel tank.