Where is the 2006 Honda civic coupe fuel filter located? Where is the 2006 Honda civic coupe fuel filter located? Follow the fuel inlet hose from the passenger side of the fuel rail mounted onto the intake manifold, to the fuel filter which should be 2006 Honda Civic Si Replacement Fuel Filters – CARiD Honda Civic Si 2006, In-Tank Fuel Filter Kit by Genuine®. This vehicle does not have an in-line fuel filter between the fuel tank and the engine. This part is not a normal maintenance item; its replacement requires removal of the fuel..