Sierra vs Mercury water pump kits

pman7

Petty Officer 2nd Class
Joined
Nov 29, 2006
Messages
129
Are the Sierra water pump repair kits sold at NAPA as good or at least good enough to use? Seems like quite a difference in price.

For my 1971 Merc 500 the kit has quite a few parts for just $22.

(1) 18-3007 Impeller - replaces O.E.# 47-89983
(2) 18-2945 Drain Gasket - replaces O.E.#12-20260,12-19183
(1) 18-2823 Low. Water Pump Base to Face Plate Gasket - replaces O.E.#27-32769,27-19553
(1) 18-2824 Upper Face Plate to Pump Body Gasket - 27-32770
(1) 18-2825 Water Pump Base Gasket - replaces O.E#27-32771,27-19551
(1) 18-2841 Water Pump Base Gasket replaces O.E.# 27-77417,27-19552
(1) 18-2948 Rubber Washer - replaces O.E.# 12-49221-1
(1) 18-3107 Plate - replaces O.E.# 54705
(1) 18-7155 O-Ring - replaces O.E.# 25-26855
(1) 18-7174 O-Ring - replaces O.E.# 25-45711
(1) 18-7115 O-Ring - replaces O.E.# 25-26722
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Sierra vs Mercury water pump kits

First the parts you list make that a impeller kit not a w/pump kit, most items are gaskets. It's still a good value but should not be called a w/pump kit
 

pman7

Petty Officer 2nd Class
Joined
Nov 29, 2006
Messages
129
Re: Sierra vs Mercury water pump kits

Thanks Laddies.

I was just going by what they said here:

http://www.iboats.com/mall/partfind...gd_poid=110869&gd_row=33&session_id=814270393

What would constitute a water pump repair kit that the impeller repair kit lacked, the housing? I would think if you added in the housing and the impeller key you would have a whole new water pump as opposed to a water pump repair kit. Are there other parts that are not included?
 
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