65 diesel thermostat

Dopp Creek · Apr 1, 2014

As I am cleaning out the cooling system on my 1963
65 diesel I pulled out a bellows type thermostat.
The counterbore in the casting is 2.750" and I am
confused as to what to replace it with. I searched
the archives and found reference to replacements
with a Stant # 13358. My NAPA guy crossed that to
a NAPA 170 and that is a standard automotive
thermostat about 2.125" in diameter. What
thermostat fits in that large 2.75" counterbore?
Am I buying OEM for this? Tim

David G · Apr 1, 2014

Put a 195 degree in it if you can, it will run much better.

Dopp Creek · Apr 1, 2014

Happy to run a higher temp, just gotta find one that fits first!

David G · Apr 2, 2014

I just took my old one for MH44 into the auto parts store and went through the catalog.

Dopp Creek · Apr 2, 2014

Did you have the large diameter bellows type? I may just go to a different NAPA and try there.

Dopp Creek · Apr 8, 2014

Found a NAPA 348-180 is the large diameter thermostat. The counter man took the time to look at the dimensions in the back of the book and found one that will work.

65 diesel thermostat

Dopp Creek

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David G

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David G

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