3500 Transmission Fill Plug Gasket

Apache_58

Member
I was wondering if the transmission fill plug took a gasket or copper washer, or nothing at all?

I tried to order one here, but ended up getting a cork carb sediment bowl gasket.

Half tempted to smear some RTV around it and move on.
I do want to avoid getting water in the transmission since it sets out in the weather.
 
If it's not a Select-O-Speed, then yes there should be a gasket for the fill plug.

Straight 4 speed and power reverser use part number 8N7011.

6 & 8 speed and Manual reverser originally used D9NN7037AA which has been superseded by 83918734
 
(quoted from post at 13:18:56 12/18/18) If it's not a Select-O-Speed, then yes there should be a gasket for the fill plug.

Straight 4 speed and power reverser use part number 8N7011.

That part number comes up as the drain plug washer.
I’m looking at the top fill plug.
 
That part number comes up as the drain plug washer.
I’m looking at the top fill plug

Many drain and fill plugs use the same gasket or sealing washer. Do a quick search of the number on eBay and you will see some vendors call it a fill plug gasket and some call it a drain plug gasket and give several different locations. Give the vendor you are looking at a call, or send an email and ask the dimensions to confirm your fit.
 
Ya I would be better off measuring it ahead of time.

I’m thinking if I know that it takes a copper washer, I’ll just head down to the hardware store and get one that I know fits the plug.

Good news is a friend actually needed the cork gasket YT sent me.
 

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