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Help id-ing mercury prop

I'm looking at a couple of used props for my Alpha outdrive and came across a couple of cleaver design props that the only information that I could get from the owner is they have the part number - 48 74604 A4 25P - the props were her dad's and she doesn't know anything about them - they're 15 spline and about 14.25" diameter so that seems to indicate that they'll fit the alpha outdrive... The only thing that worries me is it looks like a solid hub and was wondering about the prop nut lock-ring (or lack of splines for one)

I'll try and attach the pic she sent...

http://thumbp1.mail.mud.yahoo.com/tn...=325&fid=Inbox

Anyone have any info on this prop? How old? What application? Does it perform well?

Do not use a solid hub on an alpha. It will fit but don't do it. It will tear up your drive. Solid hubs are for transmissions and racing applications.

Quote:

Originally Posted by MOBILEMERCMAN (Post 2571349)

Do not use a solid hub on an alpha. It will fit but don't do it. It will tear up your drive. Solid hubs are for transmissions and racing applications.

Yeah - that's what I was afraid of.... Is this prop worth anything?? I can pick 'em up cheap she's got 4 props total - 2 each in 21 and 25 Pitch (assuming 1 std and 1counter rotation)