Transmission to radiator connection

P0nyRider

New Member
Aug 5, 2024
2
0
1
San Jose, CA
Hi folks !

TLDR: I need the long tube nut in the pictures. It connects the transmission lines to the radiator.

I have a V6 2004 3.9L automatic, all stock. My radiator was leaking and since I had done small fixes before, I thought it would be an easy job, even for a noob like me, to replace it but it's becoming a nightmare. The tube nut connecting the upper transmission line to the radiator was easy to untighten (see pic) but the lower one was very rusty and I couldn't untighten it even after spraying a lot of lubricant. After a lot of struggle, the nut started breaking into crumbles until I had nothing to grab so I decided to cut the line with a tube cutter thinking that it's no big deal to get a few inches of line and new fittings. Now here comes the problem: I can't find the damn tube nut to connect the line to the radiator ! I've been ransacking the internet in the past couple of weeks and ordered a few tube nuts that looked similar but they don't have the right threads or size so they won't fit into the radiator nut.

Options I've thought about:
1. Where can I buy this little thing ? Where do you guys buy this kind of fittings in general ? Checked Ford's website and couldn't find it. Many parts are discontinued for this model.
2. Does anyone have the part in the picture and is willing to sell it ? I'm in San Jose, CA and I can come pick it up if in Bay Area or pay for the part + shipping if elsewhere.
3. Replace the radiator nut and find a matching tube nut for the line ? Can I find them in pairs that go together somewhere so I don't start guessing again ? I suppose it would also need to take the same line size to keep the same pressure in the transmission.
4. Visit junkyards hoping to find a model like mine. Checked craigslist and nothing there.

Any other options ? I'm getting pretty desperate... Never imagined this part would be so hard to find.

Thanks a bunch ! Wroooom-wroooooom !

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Hey, I just saw this post. I know I'm late but I looked a bit and that nut is called a Stick nut. I found some possibles at O'Reilly. A TR620 may work if you can find one. It appears they may be unobtanium. Did you ever find one? I've got some leaks at my radiator connections for my '96. Hope yours is back to working. Cheers.