That boat should require a 23 pitch prop.
Question is - why do you need to replace it. What are your current wide
open rpms.
Take the current prop off and take to a local prop shop. They can measure
it and tell for sure what you have. Then based on your rpms they can advise
as to what new prop you need. You will have to decide do you want - SS, 4
blade, etc...

Tony

"minhxn" wrote in message
...
Hi There,

I have 1991 Rinker 17' long. It has Mercruiser Alpha One stern drive, and
4.3L V6 engine.
I try to look for the right size for its propeller, but I have no luck.
Each place I went, they gave me different result. Some suggested I should
use 17 pitch, and some 19 pictch. I am new boater, and kinda confuse.


Do you have any ideal what propeller should I use for this boat?
If you have part number from Mercruiser, that is even batter.

Thanks a lot,

Ming