If the hole is on the arm nearest the pump inlet you have the EZ-SX pump

25ft hose with M22

NEMA 184-TC flange for electric motor

PA TD1 double nozzle holder

1500 PSI Maximum Rated Pressure

Interpump "59 Evolution Series" E3C2515 3625psi 3.9gpm Solid Shaft shaft_1-1-8-electric If the hole is onInterpump 59 Evolution Series E3C 2515 triplex pressure wash pump. 3625 PSI Maximum Rated Pressure 3. 9 GPM @ 1750 RPM Shaft Diameter: 24mm Inlet: 1 2" FPT Outlet: 3 8" FPT Left or right hand shaft available (right shaft in picture). Unloader sold separately. Do not install pump without unloader or pressure regulator. Professional installation is recommended.