According to RepairPal, the typical cost of a fuel filter and the associated washers and sealers is between $30 and $57 as of 2015. The labor cost of replacing the filter is generally between $70 and $90.
Fuel filters sit between a vehicle's gas tank and the fuel injectors and filter out small pieces of debris. Replacing a fuel filter is fairly straightforward, so a car owner may be able to save on labor costs if he knows how to access the filter. Fuel injectors have small nozzles, so even tiny bits of material can cause problems. Debris can damage engines as well. Filters can become clogged, although a problem with the gas tank or contaminated fuel often causes this.