Mercruiser engine cross reference please

[tmh]

I can't find my engine serial # range anywhere - assuming I actually am using a proper #. I read the # off a small blue tag on/near the carburatior. I hope it's for the engine but it could be the carb ID Here's what it says.....

5,7L 5.7 INB 1347-9662

Any help? What does "INB" mean?

edit.....never mind, saw this is the Carb ID#. I'll keep looking.

 

[littlebookworm]

Re: Mercruiser engine cross reference please

It is stamped on the starboard side, just above the starter, and again on the starboard side, on the front just below the cylinder head near the gas/water separater. Both spots are a PITA to find and read. There is a diagram someone in an old thread showing the exact locations. Good luck. HY

 

[tmh]

Re: Mercruiser engine cross reference please

Well, I've looked everywhere (except whereever it is, if it's there). Maybe I'll take off the gas/water seperater tomorrow and check there.

 

[Don S]

Re: Mercruiser engine cross reference please

 

[tmh]

Re: Mercruiser engine cross reference please

OK. Thanks so much for the very specific location info. I had look in those areas for a long time - I never did find it.....but my son, who isn't old and falling apart, was able to find the S/N plate! Finally. here's what it says.

Serial No. C670724

Mercury Marine, Div. of Brunswick

So I assume that is the correct s/N. I still don't see that number in the ranges on the charts i looked at.....seems like most have 8 digits, not seven.

don? Anyone? Thx.

 

[JustJason]

Re: Mercruiser engine cross reference please

if you have the correct number then your going to add an O to the beginning of it.
it's going to be....

OC670724

 

[tmh]

Re: Mercruiser engine cross reference please

OK, thanks.....putting the "O" before the S/N my son read makes it "work" in the reference page I found online. It gives ranges for various engines and mine looks to be in the 1987-1992 range. Assuming sequential numbering (I have no idea if this is how they did it) I'd put mine around 1990 I guess. I THINK it''s a 350 Mag Alpha but not sure as the ranges cover a few models.

Any way to be more specific?

 

[JustJason]

Re: Mercruiser engine cross reference please

more specific than what?
true, even though some things can be referenced by years
Mercruiser does not do model years.

 

[jsferra1]

Re: Mercruiser engine cross reference please

Hope this helps ....

Search Results For: 0C670724

Model Search Results (7):

Model Serial Number Range

--------------------------------------------------------------------------
200 (2 BBL.) GM 305 V-8 1987 0B525982 - 0B774444
--------------------------------------------------------------------------
230 (4 BBL.) GM 305 V-8 1987 0B525982 - 0B773739
--------------------------------------------------------------------------
260 (2 BBL.) GM 350 V-8 1987 0B525982 - 0B773304
--------------------------------------------------------------------------
350 MAG. ALPHA GM 350 V-8 1987-1995 0B525982 - 0F600999
--------------------------------------------------------------------------
5.0L (2 BBL.) GM 305 V-8 1988-1995 0B774445 - 0F600999
--------------------------------------------------------------------------
5.0LX (4 BBL.) GM 305 V-8 1988-1995 0B773740 - 0F600999
--------------------------------------------------------------------------
5.7L (2 BBL.) GM 350 V-8 1988-1995 0B525982 - 0F600999

 

[tmh]

Re: Mercruiser engine cross reference please

OK, I've got it, thanks all. Mine is the 350 Mag Alpha and it's a 4-bbl. That's what I need to know for any parts/service needs.

Sounds like actual model year isn't specifically determined by S/N but I see the range and figure "around 1990". t doesn't really matter much I guess, just a curiosity.

 

[JustJason]

Re: Mercruiser engine cross reference please

Sounds like actual model year isn't specifically determined by S/N

That's because there's no such thing as model year as far as Merc is concerned....
Boggeling... isn't it