The Headlamp (gsx1100z/ez/d/ed/xd/exd) assembly is constructed from several parts from which the Unit is the most expensive.
Parts such as the Headlamp (gsx1100z/ez/d/ed/xd/exd): Screw, Unit, Bulb(12v4w), Nut are included in the Gsx1100es 1983 (d) United Kingdom Germany (e02 E22) Headlamp (gsx1100z/ez/d/ed/xd/exd) parts fiche.