Mercury black max water pump base

[CraZyNOTRT]

I have a 1984 150hp black max Serial # 6443561 and believe its a model number 1150624.

I bought a sierra water pump rebuild kit with base 3316 and the base is wrong.

the old base has a alignment pin near the gasket on the bottom.

I can't find the correct part number to replace the base, What is it?

[CraZyNOTRT]

Never mind, i figured it out. Old water pump housing was a 3 piece unit, new one was only 2. just had to take out the other part.

[boats.net]

It can be difficult finding correct parts on gearcases as you never know if gearcase has been replaced with a newer one.
Glad you have it figured out now.