This Signal Generator diagram displays the required parts for the Gsf400 1992 (n) (e02 E04 E16 E21 E22 E25 E30 E34 E53) Signal Generator.
On this parts fiche the Nut is the most specified component.
The most reasonably priced component used on the Gsf400 1992 (n) (e02 E04 E16 E21 E22 E25 E30 E34 E53) Signal Generator is the Washer.