Abstract: A spring clip for retaining together a fuel injector and a fuel rail cup includes first and second parallel spaced side walls and a third side wall resiliently connecting the first and second side walls to form a generally U-shaped body with an open side. The first and second parallel spaced side walls include flanges extending inwardly toward one another from opposed lower edges of the side walls. The flanges are configured to coact with an exterior surface of an associated fuel injector to locate the injector axially relative to the clip. The first and second parallel spaced side walls also include slots arranged to receive a flanged portion of the fuel rail cup such that the clip is located axially relative to the cup, thereby locating said injector axially relative to said cup. An aperture in the third side wall receives both a radially protruding orientation key of the injector and a corresponding orientation key of the fuel rail cup to fix the injector against rotational motion in the cup.