TOOLCY 3/4″ Shaft Horizontal Pressure Washer Pump Compatible with Honda, Simpson by | Jul 22, 2026More Accessories From TOOLCY. Simply Replace it and Revive your Pressure Washer! ※►Diagonal distance between screw holes is 3 5/8″. ►Hole Distance to hole is 2 9/16″. ►Key width 3/16″. ►Depth 2 5/8″.