Diff I need an AMC 20 cover with a fill hole

[NotTJ]

As I was finishing my alloy shaft and locker install on the AMC20 I realized the fill plug should be tended to. The fill plug on my axle has been rounded off and even tapping in the next size up allen or torx won't make it budge...with heat. SO that sent me to tap a piece of 3/8 for 1/2-20 and used a 1/2-20 oil drain plug to seal it...I was just gonna weld this piece of 3/8 steel into the stock cover. Then I got to thinking about how much easier it would be to just swap the whole cover. The problem is I don't want chrome, I don't want aluminum, and I don't want over priced. The only good fair priced one is the OX cover for about $120. Are there any plain stamped steel diff covers with a filler hole? Or plain cast/fabricated/welded covers with fill holes?

 

[Belizean]

Nice ones are not cheap from what I have seen out there.

 

[j6824]

Had one of these before I swapped out the 20...great fit, beefy to boot:

https://999offroad.com/product/amc-20-heavy-duty-diff-cover/

 

[TSB8C]

I got this one from Amazon for about $AMC 150 (also available on 4WheelParts.com, RealTruck.com, others). It has a drain hole in the bottom. You'd have to make a fill hole in it. It's beefy (3/8 steel). Notice the ".44 caliber tested" note (hope I never encounter that on the road or trail).

 

[NotTJ]

Well I ordered an OX cover a couple weeks ago. Nothing shipped. So I had to add my own fill hole. First I marked a hole at the same height as the factory fill port out back. Then I welded in a piece of 3/8" steel that I had tapped to 1/2"-20.



Then test fit cover and paint. Reinstalled cover with new zinc plated bolts which shouldn't seize in there like 11 of 12 original torx.


Finally topped it off with a 9/16" head drain plug and copper crush washer. Don't mind the wonky brake line and crusty stuff on the frame...i swear its all solid but I just haven't go to cleaning it and bending a nice low profile hard line that won't get caught by branches on the trail.

 

[TSB8C]

Maybe a drain plug at the bottom while you're at it? Then easy fluid changes.

 

[NotTJ]

I just needed a way to fill it and had to get it done quick. That was like 10 minutes of work. I don't think the AMC20 is getting any more work. So far its locked and alloy shafted.