A rebuild kit is normally 2 bearings, 2
seals, a circlip and an impeller with the
gasket, all except the impeller can be obtained from a local bearing shop, what
engine do you have that is so hard to source spare parts for?
If you need a pulley and shaft as well, it might be useful to do a search for “Ancor”
raw water pumps, use your
engine type and model as the key reference, I’ve bought a few of their range of after market pumps and am perfectly satisfied with the quality and
price.