A normally closed automotive clutch with hydraulic drive; the clutch comprises: a pack of driven and driving plates (7, 8), which are mounted so as to rotate around a rotation axis; a pressure ring, which is mechanically coupled to the pack of plates (7, 8) and can axially slide so as to axially compress the pack of plates (7, 8) and, therefore, vary the torque transmitted to the clutch; at least one elastic closing element, which presses the pressure ring so as to axially push the pressure ring against the pack of plates (7, 8); a hydraulic actuator comprising an inner actuation chamber, which is suited to be filled with a fluid under pressure so as to generate an opening thrust, and a sliding piston, which is coupled to the inner actuation chamber and is mechanically connected to the pressure ring; and a box, which is provided with a lateral lid and houses the pack of plates (7, 8), the pressure ring, the elastic closing element, and the hydraulic actuator; the clutch is characterized in that: the inner actuation chamber is obtained in correspondence to a central portion of the lid and is laterally delimited by a first lateral wall with an annular shape, which is rigidly connected to the central portion of the lid and is delimited, at the two opposite ends, by a first bottom wall with a circular shape, which is integral to the first lateral wall, and by a second bottom wall of the sliding piston with a circular shape; and the sliding piston is an integral part of the pressure ring and constitutes a central part of the pressure ring. a pack of driven and driving plates (7, 8), which are mounted so as to rotate around a rotation axis; a pressure ring, which is mechanically coupled to the pack of plates (7, 8) and can axially slide so as to axially compress the pack of plates (7, 8) and, therefore, vary the torque transmitted to the clutch; at least one elastic closing element, which presses the pressure ring so as to axially push the pressure ring against the pack of plates (7, 8); a hydraulic actuator comprising an inner actuation chamber, which is suited to be filled with a fluid under pressure so as to generate an opening thrust, and a sliding piston, which is coupled to the inner actuation chamber and is mechanically connected to the pressure ring; and a box, which is provided with a lateral lid and houses the pack of plates (7, 8), the pressure ring, the elastic closing element, and the hydraulic actuator; the clutch is characterized in that: the inner actuation chamber is obtained in correspondence to a central portion of the lid and is laterally delimited by a first lateral wall with an annular shape, which is rigidly connected to the central portion of the lid and is delimited, at the two opposite ends, by a first bottom wall with a circular shape, which is integral to the first lateral wall, and by a second bottom wall of the sliding piston with a circular shape; and the sliding piston is an integral part of the pressure ring and constitutes a central part of the pressure ring. the inner actuation chamber is obtained in correspondence to a central portion of the lid and is laterally delimited by a first lateral wall with an annular shape, which is rigidly connected to the central portion of the lid and is delimited, at the two opposite ends, by a first bottom wall with a circular shape, which is integral to the first lateral wall, and by a second bottom wall of the sliding piston with a circular shape; and the sliding piston is an integral part of the pressure ring and constitutes a central part of the pressure ring.