The Bosch Rexroth PWB 9150064-133P is a genuine electronic control card, also known as a Printed Wire Board, specifically engineered for use with Rexroth’s A4VG series axial piston variable pumps. This component is integral to the pump’s electronic control system, managing signals to ensure precise and responsive operation. As a critical internal part, it plays a vital role in regulating the pump’s displacement and overall performance. Replacing a faulty or outdated board with the 9150064-133P is essential for maintaining the operational integrity, efficiency, and reliability of your hydraulic system.