The invention relates to a steering actuator piston with a rack (6) for an aircraft landing gear (1) characterized in that the piston comprises a body (10) made of a lightweight alloy having an externally threaded main span (11) terminated on one side by a shoulder (12) and extended on the other side by a skirt (13), the body having screwed to it a tapped bronze bushing having on its outer wall at least one groove for receiving a seal, the skirt having a drilling to receive a pin for securing the piston to the rack, the bushing extending in service between the shoulder and the pin so that it is retained axially between the shoulder and the pin.