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