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Serial # Missing From Drive, Need Water Pump

B

bonden

Member
I can find no serial number on the actual drive leg as its been painted kinda thick and crusty with black antifouling paint by a previous owner. According to http://www.marineengine.com/mfr/mercruiser_models.html I see it should be "located on the upper drive shaft housing (starboard side or on the back of the housing)." Nada.

There is a metal number tag in nice condition on the upper part of the transom plate stating that serial number as OD405560. The boat is a 1991 model but I have no way of knowing if the drive leg is original to the boat.

Should I just get the water pump out and then worry about matching it? Is there some way to know these things, or should I just post pictures of it here after its out...?
 
Take a picture of the drive, a clear one and post it.

model types

alpha 1 gen 1
alpha 1 gen II

bravo 1
Bravo II
Bravo III


need to know what engine, what size boat............

I have a truck but dont know what engine is in it, can you maybe tell me from there what it may be?
Get the hint?

COMPLETE Information and pictures will allow for a better answer.
 
When your 1991 boat was sold new, it was registered as this,

ENG: 0D398094 Model# 450L100CS MERCRUISER W/ PS 5.0LX ALPHA (1990)
DRV: 0D401745 Model# 5010150CS MERCRUISER ALPHA 1.50:1 (1990) R.H. ROTATION
TRN: 0D405560 Model# 6010000CS MERCRUISER ALPHA TRANSOM (1990)
 
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