Valido per: MODEL XD1##, XD2##, XD3##, XD4##, XD5##, XD6##, XD7##, YD1##, YD2##, YD3##, YD4##, YD5##, YD6##, YD7##, WD1##, WD2##, WD3##, WD6##, WD7## ### up to 649051 up to 31.3.04 MODEL 903.61# /66# /67#, 904.61# /66# ## up to 649051 up to 31.3.04 with CODE (E58) Electrical system for trailer socket with CODE (ZU7) National version for Canada MODEL 903.61# /66# /67#, 904.61# /66# ## up to 649051 up to 31.3.04 with CODE (E58) Electrical system for trailer socket with CODE (ZU8) National version for USA MODEL 903