CAT E374D main hydraulic pump is a variable displacement axial piston pump engineered to supply high-pressure hydraulic oil for the excavator’s key functions, including boom, arm, bucket, and swing operations. It is built with a durable swashplate mechanism that adjusts flow output to match working demands, ensuring efficiency, reliability, and strong performance. Designed for heavy-duty applications, this pump is a vital component that keeps the CAT E374D excavator running at full productivity.