Pipe 3 Fz750 1987 2kk Sweden 272kk-322e1

Water pumps fail for three main reasons (although there are other mitigating circumstances): use of the wrong coolant, failing to purge and replenish coolant that has been in the system too long, or simply wear and tear over years of use.
Whatever the reason, the best results can be achieved by renewing as many parts of the assembly as you can afford. Check also the radiator, hoses and ancillary parts - new parts are always beater than reusing the old items!
Other related parts that you may wish to consider:

1UF1242101
1UF1242109
1UF1245000
1AE1242201
1AE1242209
1AE1248100
1AE1248101
3DX1246900
1AE1248200
1AE1257600
1AE1241702
1AE1257700
1AE1246101
1AE1240500
2KT1246700
9048001438
1AE1248400

Add as many components as you wish to the same shopping cart, new bearing 9330600106 mechanical seal 11H1243800 thermostat 1AE1241000 & hose clips 9045038040 9046708003 for example, and still only pay the same single fixed price shipping cost.

Engine work to carry out? Pro-workshop gasket sealant 08C70K0234M - easy to use with excellent results.

This component may have other, sometimes unrelated applications within the Yamaha model range, so please always check by the part-number rather than the description prior to ordering.