Plug connector housing composed of two parts (1, 1′), each including a respective metal shell (2, 2′) preferably made of aluminium alloy, suitable for housing at least one respective contact element (3, 3′) connectable to a conductor of a cable, including at least one locking device (4) and at least one sealing gasket (6, 6′) of elastomeric material, the metal shell (2, 2′) including a protective coating resistant to corrosion and erosion (7) at least along its outer surface, wherein the protective coating resistant to corrosion and erosion (7) is constituted by at least one electrolytic ceramic coating (8).
