Stant or Gates Thermostat, any issues with these two brands?...'99 CTD

 

Ive been reading the thermostat threads about some crappy thermostats and temp swing issues etc

 

 

 

 

i didn't have good luck with them in my 04. i went to a cummins one and it's ok now. But Mike has great luck with the Napa one, and i believe they are a Gates. i am wrong sometimes though. 

you could always drill a hole in it for overheat protection. 

Oem cummins is more consistent but any will work. My old cummins 180 was pretty steady no matter what. The 190 and 200 stants I have run swing 10-15 degrees consistantly.

I'm using gates 190 from rock auto no issues 

I old oem worked 14 years so I replaced with same.  Wax pellet type, so not cheap.  01 with almost 90k miles, so lots so t-stat gets lots of use.   Hate to say  price was close to $80.00 if I recall right from cummins dealer (ouch) if i get 14 more years...i am happy. I am not as lucky with water pumps.

  Weep hole with wobble pin.

( wife remembers maybe I got some oil also at same time?  So maybe not so much $$$. ???)

Edited December 22, 20177 yr by 015point9

NAPA thermostats all the way in my truck ZERO issues to date.

Is Napa actually a Gates ?

Is Napa actually a Gates ?

Edited December 22, 20177 yr by GSP7

Not that I know of.

I put a NAPA t stat in about a year ago.  My temp is usually 190 around town & 194 on highway.  No temp swings at all.

 

L8tr

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Napa has a regular, premium, and safe-T- stat-(fails open position)

 

Check it out

 

 

https://www.napaonline.com/en/search?q=Nty%3D1%26Ntk%3DKeyword%26N%3D5002000%2B5002200%2B200220100%2B10199900%2B402203300%2B599999900%26Ntt%3Dthermostat&text=thermostat&isApplication=true&indices=API&referer=nol-veh-conds

 

Edited December 23, 20177 yr by GSP7

I just bought one of those 12v 195* t stats that @jlbayes mentioned in another thread. Got it from Rock Auto for the whopping sum of $1.42.

I'm running a 200° Stant 49212. Huge temperature swings. Gets a little better while you drive, but never great.

According to what I’ve read on here & cumminsforum..... certain engine parts, like gaskets and pumps and other vital parts, no matter how unimportant they may seem, always go OEM Cummins. Sure, batteries, belts, bearings, brakes, fluids and other common maintenance items are ok to go aftermarket with. But sticking with original equipment parts on vital things is the common consensus. 

Been reading up on thermostats on other forums too. Found out these so called Safe-T-Stats or Fail safe stats are a Junk. they lock open at 220 or even lower and then they have to be replaced

 

I also ran across the below with a couple other poster confirming it... For What Its Worth...

 

Quote

This is a “for what it’s worth” response to those who advise on using an OEM Cummins thermostat in lieu of an after market Auto Parts Store thermostat.
I just did a successful replacement of my heater core. Before I started, I looked here on the forum for advise, and all the information was a tremendous help. So now I want to replace my thermostat. Again, I look here on the forum for advice and see several posts about only using an OEM Cummins thermostat as the after market ones fail quickly or don’t work properly. I call my local Dodge dealer and the Parts Dep’t guy says, after I give him my VIN number, that the thermostat for my ‘99 2500 is “obsolete” and no longer available. So I ask him if I brought my truck to him to replace the thermostat - what would he put in it? He said an after market one from the local Auto Parts Store. I drive to my local NAPA store and tell the guys my story. They hand me a NAPA brand thermostat that’s spec’d for my truck but also give me the name and number of a Cummins parts dealer. I call up this Cummins parts place and the guy wants the engine serial number (not the VIN). I give it to him and he matches the proper thermostat for my engine saying he has one in stock - cool !! I go and pick it up and it is identical to the one NAPA had, I mean IDENTICAL, all the way to the articulate markings and stamps. Both made in the USA. I bought the one at the Cummins place because the guy was very helpful and I was sort of committed, but took it back to NAPA for side-by-side comparison and I could find no difference between them except one came in a Cummins box and the other a NAPA. The Cummins was $42.00 and the NAPA was $25.00.
Just wanted to let you guys know that NAPA’s thermostat part number 375-190 is identical to Cummins thermostat part number 5292742, at least according to my comparison.

 

^^^Did a quick search and it's only a 180f I would run 190 -200. And yeah people at parts counter at Cummins are brain dead

1 hour ago, Dieselfuture said:

And yeah people at parts counter at Cummins are brain dead

NO, their not.  They still ask if you want fries with your order.

Just now, IBMobile said:

NO, their not.  They still ask if you want fries with your order.

They are also few fries short of a Happy Meal too. 

I did get the Happy Meal Toy last time....... the mechanical lift pump they used to sell, by comparison, made the new version look like a toy inside. That was for my ol'e 12 valve. I was surprised to see that.

Edited December 24, 20177 yr by JAG1

One of the  last things I bought from Cummins was a 180* t stat. They swore thats what came on my truck. $80 IIRC no fries, no toy. Only difference between it and the others. it ran 10* colder.

I've read too many stories about any non-Cummins thermostat not working correctly. It's a pretty important component of the cooling system so I stick to Cummins.