There is no “external fuel filter it is in the tank. Remove the rear seat, an access panel is under the seat which once removed allows access to the fuel pump.Click to see full answer. In this way, does a Nissan Altima have a fuel filter?Nissan Altima Fuel Filter. Your Nissan Altima will be happy to know that the search for the right Fuel Filter products you’ve been looking for is over! Advance Auto Parts has 2 different Fuel Filter for your vehicle, ready for shipping or in-store pick up.Likewise, where is the fuel filter located? A fuel filter located under the vehicle near the fuel tank. A fuel filter in the fuel line under the hood. Some vehicles also have a fuel filter in the fuel pump as well as a filter screen inside the fuel tank. Subsequently, question is, where is the fuel pump located on a 2003 Nissan Altima? The 2003 Nissan Altima fuel pump is under the back seat. To gain access there are two locking mechanisms under the front of the seat. Pull the two lock rings toward the front of the car to release the seat from the locks. Remove the bottom seat cushion which gives you access to the fuel pump cover plate.Where is the fuel filter located on a 2002 Nissan Altima?the fuel filter is in the gas tank.