A hydraulic unit has a closing plate having at least one recess in which a supply passage and a discharge passage for pressure medium open, an electromagnetic regulator inserted in said recess and having a magnetic part composed of a housing, a magnetic coil with a coil core, a flux conducting element and an armature. The closing plate has a supply projection extending in the recess of the closing plate and receiving the supply passage. The supply projection has an end extending in the magnetic part of the regulator and ending in a sealing seat. The sealing seat cooperates with the armature of the magnetic part for controling the discharge passage.