Adding a drain plug to the ZF 8 speed automatic

[RamblingJeeper]

I added a drain plug to my transmission pan.
it was simple to do
This is the drain plug I used
https://a.co/d/05GaN2jh

you can also use a bolt in plug, but I opted for the weld in.
It was much smaller and did not stick in to the pan very much.

Disclaimer: modify at your own risk.

This is the weld in plug

The bolt in plug (I did not use it) and the weld in plug

The bolt in plug (I did not use it) and the weld in plug

I put my plug in the yellow circle, but I recommend that you drill yours in the blue circle.
See the picture further down to see why.

Before welding

Inside after welding

If you drill with the blue circle it will end up here.
mine is to the right just under the filter.
it does not interfere with anything, but would look better where the blue tape is.

I had to cut my 8 mm hex down to get the stock transmission fill plug out.
Not sure if that is just a JL 2 door problem.

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[kah.mun.rah]

That's pretty cool and I love the ingenuity, but how often do you plan to change the oil in your transmission?

 

[Stuckinthesand]

I like it. I have a 4 door so it wasn't an issue getting to the side plug. With that said this would cut down on the mess from dropping the pan with fluid stil in it. Drain then drop to change the filter and good to go.

 

[Willys41]

On my willys I replace the pan with a aluminum pan with a drain plug. On my wife's Rubicon I took my old pan from my willys and made a drain plug set up on my lathe and silver soldered in place.
It has a flange on the outside and a slip over flange on the inside all soldered together.
I can now drain and fill about every 25k.

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