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4 hours ago, Mopar1973Man said:

Again still WAY CHEAPER than Cummins OEM at $70 dollars a piece. 

 

 

Yes, but I think the point of this thread was finding the oem manufactures and buying direct for cheaper. I don't know for a fact, but chances are Bosch makes the tube for Cummins and Mopar. Just helping out.....:thumbup2:

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Thanks, but kind of late.

 

I called NAPA locally they claimed they had no listing for a oil cooler gasket. Figures... Most likely a greenhorn parts person.

 

Mopar dealer and Cummins dealers are the worst for price and have the highest absolute price. Which 99% of the time I'm sure you can buy the very same part for a fraction of the price elsewhere. 

Edited by Mopar1973Man

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Tidbit more.

 

@mr.obvious did a bit more testing. He put both Cummins old thermostat and the new thermostat in a pan of water and heated. Watching they both open exactly at the specified 190°F as stamped on the thermostat. The problem is when left to cool the new Cummins thermostat is EXTREME slow to close back up taking up to 3 minutes. The old thermostat only took a mere 30 seconds or so. This explains why the the new one is running cold sided. 

 

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Not even one month old and failed on my previous post. I'm 90% sure this is a Robertshaw 330 high flow thermostat and produced by Mr. Gasket of all weird companies. 

 

Just to show this failure is common to split the body from the disc.

 

48218555d1508873004-new-robert-shaw-ther

 

Image result for Mr Gasket robertshaw thermostats

 

Just to show this design is used by Chevy 6.5L Diesels.

https://www.napaonline.com/en/p/MRD385190

 

NAPA65385-190fortwinstats.jpg

 

So here we are Cummins does not produce the thermostat. Mr. Gasket does using Robertshaw 330 high flow design. Common to split apart in different applications. Just as @mr.obvious thermostat failed in his 2002 Dodge Cummins. So is it worth the $40 to $60 price tag to find out you have a part not even a Cummins part just reboxed Mr. Gasket. I've call Robertshaw and they do not acknowledge that they sell thermostats. This is when I found the tie to Mr. Gasket who is currently producing. As I said I'm 90% sure of this. 

Edited by Mopar1973Man

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