Can you help ID my sea water pump - something doesn't add up

Devil_Inside

Petty Officer 3rd Class
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Jun 17, 2007
Messages
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My engine is 2005 Mercruiser 5.7 Bravo Horizon MPI, serial #0w328501. I have a bronze sea water pump with a bronze cover, but my water pump cover has a replaceable SS wear plate (part number 8M2014176). The confusion comes from the fact that I don't see the wear plate listed in the Mercruiser catalog, and it is my understanding that when Mercruiser re-designed the water pump cover to incorporate a wear plate, they made the cover out of plastic, not bronze... So the question is, is there an OEM brass version with a replaceable wear plate?
In other words, my water pump housing cover looks similar to the one pictured on the left, except mine is made from bronze and it has an air pump cylinder and fittings. I checked the catalog once again and the only part number that I can find for my particular water pump cover is 863674A05, but I don't see any revisions or superseded part numbers, and there's no mention of a wear plate...
 

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Bt Doctur

Supreme Mariner
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19,363
You can also use the standard pump without the air fitting, Just ad a small spacer on 1 of the bracket bolts
 

Fun Times

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Depending on when they may have came out with the plate which i recall was a later design add-on repair kit, the part/plate may not have made it on the original parts catalog like in this case so off to the next parts catalog page or two you'd have to go to find if what you're noticing here would/may fit what you're trying to achieve.

Here's list of engine models the plate would fit, https://www.mercruiserparts.com/bam/...1751/12840/270

So knowing your original pump has air fittings your two part number two search out under notes would be item # 8, 863674A05--COVER KIT, Impeller Housing and/or item number - (< just above #1) 46-8M0137217, PUMP KIT, Sea Water first under your serial number range which unfortunately doesn't offer/spell-out the plate info you're looking for say in the following parts guide of your serial number range, https://www.mercruiserparts.com/bam/...1750/11681/320

But going into the 350 MAG MPI ALPHA/BRAVO - 0W650000 THRU 1A299999 / Sea Water Pump Assembly serial number range shows you the plate info that matches your part numbers you're looking for, etc., under the notes of item number - 46-8M0137217 PUMP KIT Sea Water with air fittings also lists the "plate" as the same part number, https://www.mercruiserparts.com/bam/subassembly/31751/12840/270

Plus it seems that someone may have already added the plate to your pump before you took notice of it ?.
Notes for Part Number 8M0137217
With Air Fittings
Includes parts listed below
862914A13HOUSING ASSEMBLY, Impeller
862232A2IMPELLER
841807O-RING, (3.500 x .103), Also included with Reference 8 and 9
8M0050018DRIVESHAFT ASSEMBLY KIT
8M2001645SEAL, Oil
862235A1DRIVESHAFT ASSEMBLY
NSSNOT SOLD SEPARATE, SPACER
862040SEAL, Lip
862039TOLERANCE RING
NSSNOT SOLD SEPARATE, SNAP RING
863674A05COVER KIT, Impeller Housing
862776A01COVER KIT, Impeller Housing
8M2014176PLATE, Wear
 
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