What’s this transmission part called?

gasaholic6

New Member
Dec 24, 2019
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Braselton, GA
There’s a 1 5/8 inch hole under my transmission near the oil pan and I need to find a stopper to seal it. Can someone help me find it??
 

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wmburns

SN Certified Technician
Aug 14, 2009
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It's called an inspection cover. It also serves as a drain.

I have bought one at the Ford dealer before.

Could also try your local salvage yard. Note this part would be in any 4R70W transmission. It does not have to come from a Mustang.
 
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Dale GTCS

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Jun 23, 2019
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London ohio
In a "pinch" you could out in a freeze plug you should be able to get from your local auto dealer. you will have to replace it again if you ever remove it, but I believe they are cheap, as far as the size is you would just have to see what they have.
Good Luck