The invention relates to a front housing of an electrical connector, particularly for sealed applications, said front housing being designed to be connected to a base and being configured to be at least partially received in a main housing of said electrical connector, said front housing comprising: at least one locking means configured to engage a corresponding locking zone of said main housing so as to lock said front housing to said main housing, and said front housing further comprising a plurality of contact sockets designed to each receive an electrical conductor to connect to said base. The invention further relates to a main electrical connector housing, to an electrical connector, to a base and to an electrical connector assembly.