OMC, 1982, 4cyl, 120 HP I/O - Alternator

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Cadet
Joined
Jul 17, 2011
Messages
7
Have an 120 HP I/O 4 Cyl OMC (Renken 1982).

I edited initial question ...

OK - see below, got the education ... now need to know alternator info.
Existing alternator is Prestolite Model ALK6222AYS3T with a Marine J1171 sticker on it.
Have googled like crazy.
Looking for today's Marine equivalent and automotive equivalent.

Has 2 poles on it, with 2 wires connected (12V), pretty simple.

Thanks,:)
 

Bifflefan

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2,933
Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

OMC is Outboard Motor Corporation. They went out of business some years ago.
GM is GM, just like Ford is Ford, and Merc is either Mercruiser or Mercury Outboard.
It can or could be a GM based engine, but its an OMC Marine engine.
 

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Cadet
Joined
Jul 17, 2011
Messages
7
Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Have an 120 HP I/O 4 Cyl OMC (Renken 1982).
Is this a GM or Merc?
Is just the same blue color as the guy with a stern drive question in June.

Thanks,:)

OK, I get it ... shows you what a rookie I am with this. Just whenever I get parts, I keep getting the Merc or GM question.

Thanks,
 

Howard Sterndrive

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4,603
Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

The main part of the engine is made by GM. It's a derivative of the 2.5L engine used in the 1960's "ChevyII" automobile.

You can look at all parts books (exploded views with zoom function) for your machine online at shop.evinrude.com - it will tell you pricing and availability of OEM parts, and a bit of googling of those numbers will give you aftermarket options.
 

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Cadet
Joined
Jul 17, 2011
Messages
7
Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

That is helpful, because I am looking for an alternator.
Existing one is a Prestolite Model ALK6222AYS3T with a Marine J1171 sticker - PIA to find and looking for auto equivalent (and understand the dangers).
Thx
 

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Cadet
Joined
Jul 17, 2011
Messages
7
Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Re: OMC, 1982, 4cyl, 120 HP I/O - Is this a Merc or GM?

Thanks for your replies, was able to find a new marine alternator:
?EMS, Model # 7320N?.

Happy boating, talk soon
 
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