PUMP WITH SPLINED SHAFT AH161647 DUAL GEAR PUMP, PLAIN BACK PLATE WITH SIDE PORTS AND QUICK COUPLER AT REAR PRESSURE PORT 123.8 MM (4.88 IN) FRONT PLATE MOUNTING FACE TO REAR PLATE 90.4 MM (3.56 IN) DISTANCE BETWEEN FRONT PLATE AND REAR PLATE 25.9 MM