350 Series Pump; Left (Ccw) Rotation; Tandem Unit 2 Stages; Sae 4 Bolt B Sec; 1-1/4” Keyed Shaft; With O.B Bearing; First Stage: 2 Gear Width; Bearing Carrier: Orb #20 Inlet Port, Orb #16 Outlet Port, Second Stage: 2 Gear Width; Port End Cover : Blank Rear Inlet Port, Blank Rear Outlet Port, Orb #20 Side Inlet Port, Orb #16 Side Outlet Port, Extended Studs Top. Tested