Water Pump...OEM?

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Joined
Mar 19, 2010
Threads
3
Messages
90
Location
Nebraska
Purchased '00 LC used 11/2009...timing belt, kit and water pump were replaced by owner just prior to sale. Manifold gaskets were also replaced.

Fast forward to now, and I had to redo the gaskets and replace the manifolds and went OEM (gaskets didn't do anything for noise due to cracked manifolds). My LC still sounds a bit like a muffled diesel when idling...and now I'm losing a bit of coolant (1 cup/week). Took it in for a pressure test and low and behold, the other work that was done just prior to my purchase is also sh:eek:t. A Duralast (I'm now guessing refurb'd) water pump that is 6 months old is leaking, and I'm going to have the independent shop I trust replace the tensioner, idler pulley, and timing belt b/c the other work and parts are too suspect. My question - OEM, or is there something better for the $$$ to use? OEM is Aisin I believe...is GMB better? Thanks in advance. Anyone else have the experience that non-OEM parts cause a diesel-like noise from the interior of the engine?

This is all incredibly frustrating...but at least I don't own a GM truck w/ a "lifetime" 40K diff! (Friend has had 2 replaced on new truck:whoops: This situation is my own stupidity.
 
16100-59275-83 is the OEM part number.

The pump parts are manufactured in Japan and the pump is assembled in Mexico.

I do not know if AISIN is still the pump supplier. The pump is not stamped with "AISIN" like the 80 series water pumps are.
 
For what I paid locally it wasn't worth using a/m parts. I have an 02 w/133k and will be doing the tbelt and h2o pump next week. Aftermarket parts really weren't a savings.
Keep in mind though, workmanship might have been poor also.
 
No doubt workmanship was an issue. The guy that worked on it was only 1 of about 4 master technicians in my state...must have been a bit tired when he worked on my car. I didn't know he used Duralast - I would have paid and ordered OEM parts. Ugh. Lesson learned.
 
But...but, the pump has a lifetime warranty!

Means you'll spend the rest of your lifetime replacing it every 6 months.

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No AISIN stamp on the OEM pumps? that's a worry.
 
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