Bad Alternator - should I replace with OEM or Sierra?

[skibum]

I would have no concerns buying a Sierra alternator, I have used a lot of their parts - water pumps, filters, electrical and even the bellows on my outdrive. I don't recall ever having an issue with any of their parts.

I always buy OEM, but my mechanic assures me that he uses them all the time and has not had any issues whatsoever.

 

[FLBoater66]

Thanks for all the guidance. Because of the warranty and learning that an OEM Alternator is actually maded by several different 3rd party companies, I decided to go with a Sierra and changed it out this weekend. During the swap out I noticed that my adjuster pulley was looking a little schoddy, so I change it, the bushing, stud and nut out. I tried the boat out after the swap and all is looking good!
Thanks to all for the input.