Where is the fuel filter in a 2009 nissan altima? - Fixya SOURCE: Nissan 2004 Altima fuel filter location and filter is inside of the fuel tank and its a part of the fuel pump assembly. you need to remove the bottom section of the rear seat via 2 clips at the bottom of th eseat need a special tool to remove the lock ring on the top of the fuel tank. you wil also need a new o-ring to close itback up. the whole pump assembly has to come out and2009 maxima fuel filter locationNov 11, 2013Where is the fuel filter to nissan altima 2010? - FixyaDec 26, 2012SOLVED: Where is the fuel filter on a 2008 nissan altimaNov 27, 2009SOLVED: Where is the fuel filter located on an 06 nissan See more results Is there a fuel filter in a 2009 nissan altima? I can't Is there a fuel filter in a 2009 nissan altima? I can't find it any where to order. 2 Answers. Seems like it might be under the rear seats but im not sure if its inside the fuel pump assembly. Do I have purchase the whole fuel pump assembly or not?