A fuel injector includes a homogenous charge nozzle outlet set and a conventional nozzle outlet set controlled respectively by inner and outer needle valve members. The homogenous charged nozzle outlet set is defined by an outer needle valve member that is moveably positioned in an injector body,Check Valves which defines the conventional nozzle outlet set. The inner needle valve member is positioned in the outer needle valve member. The outer needle valve member is a one piece component that includes at least one external guide surface,Needle Valves an external valve surface and an internal valve seat. A fuel injector comprising: an injector body defining a first nozzle outlet set and including a valve seat; a one piece first needle valve member at least partially positioned in said injector body, and including an external valve surface and an internal valve seat,BUTTERFLY VALVES and defining a second nozzle outlet set; a second needle valve member at least partially positioned in said first needle valve member; said first needle valve member including an opening hydraulic surface exposed to fluid pressure in a first nozzle chamber; said second needle valve member including an opening hydraulic surface exposed to fluid pressure in a second nozzle chamber; said second nozzle chamber being fluidly connected to said first nozzle chamber via a connection passage defined by said first needle valve member; said first needle valve member defines a sac volume between said internal valve seat and said second nozzle outlet set; and said second needle valve member includes a sac reduction extension positioned in said sac volume. In one aspect, a fuel injector includes an injector body that defines a first nozzle outlet set and includes a valve seat. A one piece first needle valve member is at least partially positioned in the injector body, and defines a second nozzle outlet set. The one piece first needle valve member also includes an external valve surface and an internal valve seat. A second needle valve member is at least partially positioned in the first needle valve member. The first needle valve member includes an opening hydraulic surface exposed to fluid pressure in a first nozzle chamber. The second needle valve member includes an opening hydraulic surface exposed to fluid pressure in a second nozzle chamber, which is fluidly connected to a first nozzle chamber via a connection passage through the first needle valve member. In another aspect, a fuel injector includes an injector body that defines a first nozzle outlet set and has a tip with a guide bore defined by a guide surface. A one piece first needle valve member is at least partially positioned in the injector body, and defines a second nozzle outlet set. The one piece first needle valve member includes an external valve surface and an internal valve seat. A second needle valve member is at least partially positioned in the first needle valve member. The first needle valve member includes an end portion in guiding contact with the guide surface of the injector body. In still another aspect, a method of manufacturing a fuel injector includes a step of machining a lower guide surface, an external valve surface and an internal valve seat on a one piece first needle valve member. The lower guide surface of the first needle valve member is positioned into guiding contact with a guide surface that defines a guide bore in a tip of an injector body. A second needle valve member is inserted at least partially inside the first needle valve member.

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