What aftermarket alternator do i need???

al120hp

Recruit
Joined
Jun 12, 2004
Messages
4
I have a 1989 4.3l mercruiser. The alternator is bad but I cant make out any of the numbers except that it is a 55amp unit. It has a purple and a red wire coming off the alternator and two studs for a ground and a red wire. It also looks like it has an external voltage regulator. This is a NONSERPENTINE unit. Any suggestions <br /><br /><br />Thanks <br /><br />AL
 

Haut Medoc

Supreme Mariner
Joined
Jun 29, 2004
Messages
10,645
Re: What aftermarket alternator do i need???

Take it to a re-build shop.
 

al120hp

Recruit
Joined
Jun 12, 2004
Messages
4
Re: What aftermarket alternator do i need???

The housing on it is cracked, it is a freak thing. I would rather just get a new one.<br /><br /><br />Thanks<br /><br />AL
 

jeff13601

Chief Petty Officer
Joined
Apr 30, 2005
Messages
593
Re: What aftermarket alternator do i need???

Do you have a local mercruiser dealer? They can steer you in the right direction$$$$$$$$
 

tommays

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Joined
Jul 4, 2004
Messages
6,768
Re: What aftermarket alternator do i need???

you can match it up with a newer single wire unit and tape up the unused wires<br /><br />NAPA and other auto stores do sell MARINE units<br /><br />you will only need the wire going to the battery which on mine is orange BUT is not allways the same so your going to have to sure<br /><br /><br />tommays
 

jeff13601

Chief Petty Officer
Joined
Apr 30, 2005
Messages
593
Re: What aftermarket alternator do i need???

Go to www.marineparts.com. It might be sierra number 5966 and the new price is 199.00. Rebuilts are about 115.00. There number is 1-800-680-0389. I am sure they can find the right one
 

KaGee

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Aug 14, 2004
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Re: What aftermarket alternator do i need???

Did you think to look at our sponsor, Iboats??????
 

jeff13601

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Apr 30, 2005
Messages
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Re: What aftermarket alternator do i need???

I guess you are right. I never even noticed. Someone on here gave me the link so I assumed it was related. I better check and see how much I could have saved using this site. I will make sure not to make that mistake again
 
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