55 Series Pump Bi-Rotational Single Unit Sae 4 Bolt B Sec 1-1/4” Keyed Shaft With OB Bearing 2-1/4 Gear Width Gear Housing Orb #20 Inlet Port Orb #20 Outlet Port Port End Cover Orb #20 Rear Inlet Port Steel Plug Orb #20 Rear Outlet Port Steel Plug Standard Studs