Originally Posted by lakematdude (Post 3389829)

Yes, using the engine serial number is the best way to find the correct Mercruiser part numbers for your engine or drive system.

Also just as a FYI the serial number you posted is missing one number at the end, There should be a "0L" then there should be six numbers after it to find your engine, especially with your engine because it would mean the difference between having a Carbed engine or a EFI engine if your off one number.

From what I can tell from the serial number you posted and me guessing a final number, Your engine does not have Power steering?

Merc part number 816034 is Superseded to 816034Q $42.78 Description: V BELT, 48.125 LG (Water Pump)

Merc part number 812427T is Superseded to 812427Q, MSRP: $47.90 Description: V BELT, 56 LGTH (If you have "Power Steering")

Merc part number 69143T is Superseded to 69143Q MSRP: $27.30 Description: V BELT, 40 LGTH (Sea Water Pump).

And here is a link to all of your engine parts for you.
http://www.mercruiserparts.com/selec...doc_nbr=878389

Hope this helps, Good luck.:)