Patent ID: 7004609

Claim:
A headlight lamp comprising: at least one lamp vessel with at least one luminous means enclosed therein, a lamp base which is provided with electric terminals for electrically connecting the headlight lamp, the lamp base having an annular metallic holder in which the at least one lamp vessel is fixed, the lamp base having at least three reference noses arranged in a common plane, and having an annular base flange, the base flange plane being arranged parallel to the plane of the reference noses, and the base flange being provided with at least three lugs which are arranged along its circumference, are of resilient design and serve together with the reference noses for fastening the lamp in a headlight, wherein the reference noses are integrally formed on a reference ring which is connected to the annular metallic holder and to the base flange and which has a flat annular surface arranged parallel to the base flange plane, the outside diameter of the annular surface being greater than or equal to the inside diameter of the base flange and greater than or equal to the outside diameter of the annular metallic holder, and the inside diameter of the annular surface being smaller than the inside diameter of the base flange and smaller than the outside diameter of the annular metallic holder.