This Unit is the most expensive of the items that make up this Headlamp (e4) assembly.
Parts such as the Headlamp (e4): Socket, Spring, Socket, Unit are included in the Gp125u 1979 (n) (01 02 04 06 10 13 14 17 18 21 22 24 32 35 41 42 Headlamp (e4) parts fiche.