Biswing Pressure Washer Pump, 3/4″ Shaft Horizontal Axial Plunger, 3400 PSI Max by | Jul 24, 2026(ONLY Fit 3/4″ Shaft Horizontal Engines). EASY TO USE : Features a 3/4″ NH garden hose inlet and M22-14 male thread high pressure hose outlet, this powerful pump can be easily connected to a pressure washer hose.