Electrical connector plug for ignition devices

An electrical plug connector comprising:

• a housing and a plug-in projection mold onto the housing which comprises along a plug-in direction of plug connector contact elements for mating by a mating face with corresponding counter elements in a connector part wherein a shielding device comprises an electrically conductive ring on the mating face which surrounds ends of the contact elements the ring includes contact studs arranged parallel to the plug-in direction, the studs adapted to conducting away electrical charges, and with at least one connection which is connected to a cable in the plug connector and wherein said plug-in projection is substantially cylindrical in shape and at least one stop spring arm and one guide element are arranged on the outer circumference of said plug-in projection, the shielding device projections forming the studs, such projections starting from the periphery of the ring being bent and lying on an external profile of a plug projection, in a direction parallel to the mating direction of the plug in a complementary connector recess.