Abstract: In a fuel injection nozzle assembly including a fuel injection nozzle having a cylindrical nozzle barrel with a bore communicating with a nozzle tip and a fuel port formed in the side wall thereof for delivery of pressurized fuel thereto, an integrally-formed fuel inlet fitting is utilized to reduce the number of joints between the fuel supply line and the fuel injection nozzle. The fuel inlet fitting has a fuel passage therethrough and includes a mounting portion at one end having a bore therethrough intersecting the fuel passage in which the nozzle barrel is positioned and a coupling portion at the outer end adapted to be connected to a fuel supply line. An integral constricted connecting portion extends between the mounting and coupling portions and has sufficient ductility to permit deformation thereof as desired. A fuel filter may be positioned within the fuel inlet fitting along the fuel passage if desired.