Drop in equivalent to Vickers V10-1P5P-11A20 hydraulic Vane Pump 7.5 GPM @ 1800 RPM 2500 PSI. 1" NPT suction port with 1/2" NPT pressure port. SAE A 2 bolt flange mount. 4000 RPM maximum. 9 tooth spline shaft. Right hand rotation when viewed from the shaft end.