95'000 miles

 

80,000....right on cue. replaced the pump, t-stat, and serpentine belt.

 

never at 280,000 miles, but i carry a spare behind the seat

 

started weeping at about 117k. cant remember if ever flushed or not. lol. If it was flushed, it was a long time ago.

 

about 150k on a trip from Portland to Sun Valley. Local dealer in Baker City was able to fix it and get me omw!

 

Water pump on my 03 5.9 began leaking around 100K ... not long after the cooling system had been flushed and the coolant replaced with "Peak (HOAT) Global Lifetime"

 

mine went at 70k, I replaced it. then again at 140k, replaced it again....im at 180k now so I guess I have 30k more to go before the third time

 

Yup... seems to be a pattern for sure... rather annoying to say the least!

 

271k and mine just failed... But had a customer's truck here, 03 with 67k on it for a water pump last week. I always have one on the shelf just in case, good thing I did because I needed it for me haha!

 

I purchased 3 trucks in 2012. A 3500 duelly. A 3500 crew cab. A 2500 crew cab. All 3 water pumps went out at 60 k. And I'm talking about within 2000 miles of each other.
We are very strict on our maintenance too. I replaced my only duramax trucks water pump once and it's got 500k on it.
I'm looking to buy 2 more trucks this summer and this isn't sitting well with me.

 

Dodge just needs to dissect the Dura's pump and replicate it. Spec out the pump better.
The shop I use sees failure of the seal to be the most prominent issue.
On the other hand,they had a Dura @ 78K needing new injectors. That's booked out @ 15hr shop time. This was a 2005.
Water pumps do go out on them but way less frequently. Book time is 4-5 hrs as I recall.

 

150k on my 03 now and currently on my 3rd WP! Went with an aftermarket WP (w/lifetime warranty of course) after the OEM seal failed. If anyone's wondering...yes...I used HOAT compliant/Peak Global Life AF on the refills every time. Fortunately swapping pumps on this particular year is easy enough and with so many failures, I can pretty much swap a pump in my sleep

 

Replaced my water pump again today. 25,000 miles on rebuild and this will be the 2nd Cummins brand pump in 15,000 miles. This is absolutely ridiculous.

 

started to leak slightly at the weep hole @ 215,000 or there abouts. Replaced pump. Coolant still measured good.

 

107,000