The WA312-2920-730 is a 20/30/31 Series gear set built for 2″ companion mount power take off applications, driving a hydraulic pump. This gear set is the drive component that links the PTO to the pump for hydraulic circuits on trucks equipped with a 2″ companion PTO mount.FeaturesGear setPart number WA312-2920-730Fits 20/30/31 Series PTOFor 2″ companion mountHydraulic pump drive gear application