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Radiator transmission cooler supply bolt

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Old Feb 9, 2025 | 08:18 PM
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Default Radiator transmission cooler supply bolt

So I had a leak out of my supply line, and decided to look. Turns out it was cross threaded on so when I took it off and went to retighten it, it stripped. Now I can not get the nut to bite the threads.
I really don’t have the money to replace the radiator, so I’d like to find a way to replace the bolt coming out of the radiator. Is this possible?

I took off the securing nut on the bolt, and then the bolt would dip back into the radiator, spilling some antifreeze, but the bolt doesn’t seem to detach anywhere or pull out from the radiator. Does it? Looking for any temporary fixes so I can at least get to work tomorrow.

 
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Old Feb 9, 2025 | 08:20 PM
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That part may be part of the cooler itself, and not easily replaceable.....Drain some coolant, then have a look down there, see what you see.
 
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Old Feb 10, 2025 | 06:26 AM
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The coolers are a piece of brass pipe that run between the fittings(bolt as you put it). No way to replace them. I would just get a external cooler and run the lines to it.
 
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Old Feb 10, 2025 | 08:21 AM
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Is it just me or is the idea of coolant coming out of the transmission port a sign the radiator if busted internally and not usable.
 
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Old Feb 10, 2025 | 10:05 AM
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Originally Posted by dodgetruck2
Is it just me or is the idea of coolant coming out of the transmission port a sign the radiator if busted internally and not usable.
There are seals there, with the nut holding it together removed, the seal..... doesn't.
 
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Old Feb 10, 2025 | 11:31 AM
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Originally Posted by HeyYou
There are seals there, with the nut holding it together removed, the seal..... doesn't.
guess I didn't realize they were assembled that way, I though it was a preformed tank with the cooler cast into it
 
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Old Feb 11, 2025 | 09:50 AM
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So it's the male threads visible that are boogered? It appears that way but the photo is not exactly high resolution. I'd run a die over them even though it looks like they're done for. I have no idea what thread pitch would be -- I just figure that out w calipers and thread pitch gauges.

But the brass fitting should unthread, unless the hex is just there to allow you to hold it when tightening?

On many radiators (eg '06-10 Exploders) the cooler line discos are notorious and you often just have to unthread the whole fitting from the radiator -- it's simply easier and safer.
 
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Old Feb 11, 2025 | 09:53 AM
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And yeah, refer to it as a trans cooler fitting as Moparite said. It's not a bolt. Proper nomenclature may still aid your quest here if you inquire with others.
 
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Old Feb 12, 2025 | 10:27 AM
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Originally Posted by Moparite
The coolers are a piece of brass pipe that run between the fittings(bolt as you put it). No way to replace them. I would just get a external cooler and run the lines to it.
this is almost exactly what I was thinking, but three other fairly decent mechanics told me that it should be removable, so that’s why I came here because I couldn’t figure it out.. I ended up doing this as a temp fix.

 
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Old Feb 12, 2025 | 10:29 AM
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If it works, run with it.
 
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