Serial Number Locations

[bstig60]

I have a 1988 Mercury Classic Fifty 45HP engine. I have been unable to locate the serial number. Is it located in multiple places? If so, where?

 

[Chinewalker]

Should be one of two places. There is (was?) a tag on the motor's swivel bracket with the serial on it. These tags can be faded out, washed off, or otherwise removed over the last 30-odd years.

The second place would be stamped on the motor block itself. I am pretty sure the 45/50 got it somewhere on the upper portion, near the flywheel. May be hidden by cowlings, brackets, etc.

 

[bstig60]

The tab on the swivel bracket is long gone. I took a close look around and below the flywheel and couldn't see any sign of a stamped serial number on the block. Would it be on the carb side of the block or around the cylinder head?

 

[Chinewalker]

Top of the block, aft of the flywheel.

 

[GA_Boater]

No guarantee on this, but it may be stamped where the red highlight is below.

 

[bstig60]

The only number I found are on the head and that is 1017-8359. Nothing aft of the flywheel on the top of the block or on the area indicated in red. I found a number stamped on the block water jacket plug. It is B-368471.... Is this it? If so, what a place to put it where it is on a part that is replaceable.

 

[Fun Times]

I found a number stamped on the block water jacket plug. It is B-368471.... Is this it? If so, what a place to put it where it is on a part that is replaceable.

Yes that's the serial number but when looking up a parts diagram, put a 0 in front of the B...0B368471. That number comes up as model number 1045412BD which makes it a 1988 MERCURY 45 ELPTO

http://www.mercruiserparts.com/selec...?doc_nbr=16403

 

[bstig60]

Thanks. That link is very helpful.