Need recommendation : best water pump other than OEM mopar -
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post #1 of 8 Old 09-15-2021, 05:35 PM Thread Starter
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Need recommendation : best water pump other than OEM mopar

2000 jeep XJ 6 cyl 4ltr auto trans...

the murray mfg pump I bought about 20 k ago decided to start leaking like a sieve this afternoon... lucky I caught it when I did.

Looking for recommendations on best repl. have heard gates as pretty good. also wondering if I should worry about " high performance " pumps that are supposed to push more fluid and lower eng temps.

Your thoughts please

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post #2 of 8 Old 09-15-2021, 05:38 PM
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I have used Napa replacements with good results.


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post #3 of 8 Old 09-15-2021, 06:02 PM
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Never buy a rebuilt water pump.

NAPA premium or ACDelco Gold / Professional.

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post #4 of 8 Old 09-16-2021, 01:07 AM
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I used a Napa water pump myself a couple years back.
Pretty sure it is just a rebranded Gates and does come with a lifetime warranty so.....
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post #5 of 8 Old 09-16-2021, 07:25 AM
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I have used both the gates and the Delco pro
But neither has been in long enough to really tell about the life expectancy.

But this is what I do know, IF you don't have a clean system, you can 'Film'
the ceramic seal and it will leak regardless of quality.

Basically you have 2 ceramic surfaces pressed together by a spring and they are essentially
flat surfaces, if you get a film of oil or other contaminants, you create a pathway for a leak to occur.

Fourspeedman mentioned using Cascade dishwasher detergent which I have yet to try, but a really thorough flush and acid clean out is essential for success.

Now I have also been told that once filmed, its over, you cannot clean it out and get it to seal again........ I cannot confirm this aspect as I never tried, but you could Cascade the system with the old pump still in and see..... still warm enough out to get by with just water for the time being.

Last edited by Wyo; 09-16-2021 at 07:39 AM.
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post #6 of 8 Old 09-16-2021, 05:52 PM
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post #7 of 8 Old 09-17-2021, 04:51 AM
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Originally Posted by CJ7-Tim View Post
Never buy a rebuilt water pump.

NAPA premium or ACDelco Gold / Professional.
I totally agree with Tim on this one. In fact, never buy anything "rebuilt" that is designed to move fluid.
- brake master cylinders.
- clutch master / slave cylinders.
- power steering pumps.
- a/c compressors. I know new ones can get expensive.

As for a new water pump, here is another option.

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post #8 of 8 Old 09-17-2021, 06:22 AM
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If you can't afford a $90 Mopar unit, check out Walmart.

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