Replacing alternator

ericcarr2000

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Mar 19, 2010
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903
OK as many of you may know I am in the process of repowering my Sundancer. I found out that my alternator is bad. it has Mercury Marine Part number 12449 does anybody know where I can get a Nice chrome replacement?
 

harleyman1975

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Joined
May 12, 2003
Messages
959
Take a pic? if it is a delco style chrome cases are available otherwise you may have to have it plated yourself.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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I dont know if I would put chrome in an engine compartment unless you like polishing and waxing to keep the chrome from tarnishing and pitting.
 

ericcarr2000

Ensign
Joined
Mar 19, 2010
Messages
903
I don't mind polishing the chrome at all. The problem I'm having is my current alternator has the regulator mounted on the back of the alternator.
Do I necessarily have to have an alternator with the regulator on the outside?
 

Bondo

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Apr 17, 2002
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71,415
Ayuh,.... You can use any Marine rated alternator,.... if it'll mount up proper,....
 

NHGuy

Captain
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May 21, 2009
Messages
3,631
No but you can use bigger.
Or snoop around the net for parts and redo it your self. I remember there were auto electrical shops that specialized in this type of stuff. it's becoming a lost "art".
The Mercruiser guide tells how. You'll' want to get the diode trio, brush & holder, probably bearings, maybe pulley. The case and windings don't fail unless dunked and rusted badly.
Or you can just buy one all made. American &/or "real" brands cost $`150 to $250. Overseas stuff $80 plus ship. I used a cheapie starter at one point while I had mine out for a recondition. It had got wet when I got water in the bilge from a lost plug. Never did put the OE back, it's sitting on my shelf rebuilt.
Whichever way you go, put a screwdriver or wrench on all the external fasteners you can reach to verify they are snug.
 
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