Trans Cooler Insanity

I suspect it is not fitting because the car is metric where as the part is SAE.

Pictures would be nice.

Did you read post # 24 on the write up?

It is still not clear to me EXACTLY what you are trying to match on the car. However, anything that you get at the hardware store without a metric size after it will not fit.

Your post does not mention the model year of the car. Note, in later model years Ford has switched to snap lock compression fittings for many lines. It will not be possible to match these with off the shelf hardware. Cutting the line to splice in an adapter is going to be the only option.

Again, that is where pictures of your particular situation could help communicate the exact problem.

If this were me insteading of calling fault with the write ups, I would get some plumbers puddy, modeling clay, or "silly puddy" and make an impression of the male threads. This would allow you to measure the thread pitch.

Then I would measure the outside diameter (in mili-meters) of the flare nut (if this is what you are trying to match). This would give you a starting spot to get the correct size.

Now comes the hard part. Finding a plumbing supply shop that carries Metic sizes. This is where the Internet will come in handy.

Have a beer and relax and you will be able to fix this.