Temperature sensor with anti-rotation stop

A temperature sensor for a motor vehicle, comprising:

• a temperature-sensitive element;
• two electrical wires connecting the temperature-sensitive element to an electrical connector;
• an insulating sheath surrounding the two electrical wires and the temperature-sensitive element;
• and
• a fixing means through which the insulating sheath passes,
• said fixing means comprising a threaded element configured to be screwed into a threaded orifice provided in an engine interface element of the vehicle in order to fix the temperature sensor to the engine interface element and a stop fixed to the insulating sheath, and
• the stop surrounding the insulating sheath and being configured to provide sealing between an inside of the engine interface element and an outside of the engine interface element, the threaded element being capable of rotating with respect to the stop,
• wherein the stop comprises:
• at least one lug configured to be inserted in a slot provided in the engine interface element so as to prevent the temperature sensor from rotating with respect to the engine interface element;
• and
• a tubular part fixed to the insulating sheath and surrounding the same, the tubular part of the stop of the fixing means being inserted into the threaded element of the fixing means,
• wherein the tubular part of the stop is extended by a ring at a lower end, the ring extending radially with respect to the tubular part and being configured to provide sealing between the threaded orifice of the engine interface element and the outside of the engine interface element, the ring comprising an internal surface configured to butt against an internal rim surrounding the threaded orifice of the engine interface element, and an external surface configured to form a stop for the threaded element of the fixing means.