Really hate asking this question
Senior User
Joined: Apr 2016
Posts: 198
Likes: 0
Thank you for all your help and steering me in the right direction. I ended up getting a motorcraft rt-139 probably paid to much but at least i know it's correct. Now on to the rest of the cooling system. Next up radiator re-core, heater core, water pump and hoses. Trying to go through this truck system by system. Hopefully ending up with a bullet proof slide in camper mobile.
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
Thank you for all your help and steering me in the right direction. I ended up getting a motorcraft rt-139 probably paid to much but at least i know it's correct. Now on to the rest of the cooling system. Next up radiator re-core, heater core, water pump and hoses. Trying to go through this truck system by system. Hopefully ending up with a bullet proof slide in camper mobile.
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
How did you get the rt-139? Up here in Ontario they are obsolete and unavailable. If anyone has a link or source for one I would be interested. I am using a Robertshaw now, but when its time for a change.......? The Stant that was previously listed did not work for me.
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
I wish I could find the notes I had for these thermostats. I know Gates has a suitable one and there are a few others besides what's been mentioned. I walked into my local parts store with a list of at least ten part numbers that would work that had the little hat on the underside. Parts counters don't know squat. They tried to sell me a bogus thermostat at first and I wouldn't bite.
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
Found the list.
Stant 180 29468
Stant 192 29469
Stant 180 13468
Stant 192 13469
Stant 192 S-346-192
Gates 180 33128
Gates 192 33129
RobertShaw 180 333-180
Ford/Motorcraft 180 RT-310
Ford/Motorcraft 192 RT-139
Ford 180 D7PZ-8575-A
Napa 180 197
Stant 180 29468
Stant 192 29469
Stant 180 13468
Stant 192 13469
Stant 192 S-346-192
Gates 180 33128
Gates 192 33129
RobertShaw 180 333-180
Ford/Motorcraft 180 RT-310
Ford/Motorcraft 192 RT-139
Ford 180 D7PZ-8575-A
Napa 180 197
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
BS.
Apparently Ford thinks Stant is good enough to be an OEM supplier, as do many others.
Stant
Don't get caught up in the "only OEM stuff will work" line, cause the OEMs have what are known as parts suppliers. Ford themselves do NOT make thermostats. They buy them from someone who does, and installs them during assembly just like myriad other parts that make up an auto. I'm from Michigan and I can tell you that there are parts suppliers everywhere, making all kinds of stuff. OEM stuff. My wife works a parts supplier. They have contracts with every manufacturer with a plant in the USA. Sure, you can buy a genuine Ford part number and it will be correct, but understand that it may not be made by Ford and it may be available elsewhere easier to aquire and cheaper. You just have to know where to look.
Thread Starter
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New User
Joined: Jan 2016
Posts: 22
Likes: 0
From: Lindenhurst NY
Please please please take a pic of your rt-139 and post it. The two links I posted in #25 are supposedly of rt-139 thermostats and they look EXACTLY like a stant. The stants I posted are what is in my 351m and have the little do-dad on the bottom to shut off the bypass. 351Cs have an extra part/hat that they need if ever lost, so the 351c stuff MAY not apply.
As soon as it comes I'll post a picture.
Cargo Master
Joined: Dec 2008
Posts: 3,211
Likes: 321
From: SW PA
BS.
Apparently Ford thinks Stant is good enough to be an OEM supplier, as do many others.
Stant
Don't get caught up in the "only OEM stuff will work" line, cause the OEMs have what are known as parts suppliers. Ford themselves do NOT make thermostats. They buy them from someone who does, and installs them during assembly just like myriad other parts that make up an auto. I'm from Michigan and I can tell you that there are parts suppliers everywhere, making all kinds of stuff. OEM stuff. My wife works a parts supplier. They have contracts with every manufacturer with a plant in the USA. Sure, you can buy a genuine Ford part number and it will be correct, but understand that it may not be made by Ford and it may be available elsewhere easier to aquire and cheaper. You just have to know where to look.
Apparently Ford thinks Stant is good enough to be an OEM supplier, as do many others.
Stant
Don't get caught up in the "only OEM stuff will work" line, cause the OEMs have what are known as parts suppliers. Ford themselves do NOT make thermostats. They buy them from someone who does, and installs them during assembly just like myriad other parts that make up an auto. I'm from Michigan and I can tell you that there are parts suppliers everywhere, making all kinds of stuff. OEM stuff. My wife works a parts supplier. They have contracts with every manufacturer with a plant in the USA. Sure, you can buy a genuine Ford part number and it will be correct, but understand that it may not be made by Ford and it may be available elsewhere easier to aquire and cheaper. You just have to know where to look.
You mean to tell me that Ford didn't make my tires? Man that sucks I really thought they did!
To the point at hand, according to STANT's website, that P/N you posted in 22 is indeed, not correct, if the picture is of the unit listed.
Please read this thread to inform yourself of the correct T-stat.
https://www.ford-trucks.com/forums/1...400-found.html
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Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
You mean to tell me that Ford didn't make my tires? Man that sucks I really thought they did!
To the point at hand, according to STANT's website, that P/N you posted in 22 is indeed, not correct, if the picture is of the unit listed.
Please read this thread to inform yourself of the correct T-stat.
https://www.ford-trucks.com/forums/1...400-found.html
To the point at hand, according to STANT's website, that P/N you posted in 22 is indeed, not correct, if the picture is of the unit listed.
Please read this thread to inform yourself of the correct T-stat.
https://www.ford-trucks.com/forums/1...400-found.html
It's all about the little hat on the bottom of the thermostat that closes off the recirculation for the water pump when @ operating temperature.
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
Perhaps you were visiting a different STANT website.
Cargo Master
Joined: Dec 2008
Posts: 3,211
Likes: 321
From: SW PA
This could be good....would need to do the following:
Measure the distance of each unit from the mounting flange to the bottom of the cup.
I will measure my block soon.
If the T-stat is too short to hit the casting in the block, it is no good.
Measure the distance of each unit from the mounting flange to the bottom of the cup.
I will measure my block soon.
If the T-stat is too short to hit the casting in the block, it is no good.
Tuned
Joined: Sep 2003
Posts: 348
Likes: 2
From: Northern Michigan
LOL I did this about a month ago but didn't write down the figures. Heated the thermostat too, to make sure it opened far enough to actually shut off the recirculation port. Measurements are gone with the wind.
I see slight differences, but one similarity that stands out is the orientation of "54mm" and "USA". Looks to me like the same line, different day.
I see slight differences, but one similarity that stands out is the orientation of "54mm" and "USA". Looks to me like the same line, different day.
