UPDATE: Apparently a brand new oil pump is no longer available. There may be some on dealer shelves or somewhere. Keep this in mind, and make sure you service the oil strainer regularly as part of the preventative maintenance shown in the FSM.
Some folks/companies are rebuilding old pump units, but I can't speak to that.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.