Oil drain plug

[Greg]

This is the plug that is in my cobra oil pan and I wondered if it is the original assembly line item?

[Bob Gaines]

This is the plug that is in my cobra oil pan and I wondered if it is the original assembly line item?

It looks like a replacement.

[J_Speegle]

+1 Definitely a replacement/stand-in for the original

Looked but don't have a picture of an original handy and in the computer to post at the moment

[OldGuy]

The oil plug that you have is a replacement plug designed to "fix" a stripped out internal thread. The tapered shape with slots re taps the  stripped thread so that the plug can once again be tightened securely. At this point I don't believe that you can go back to a standard plug because the internal thread created by this plug is larger (diameter) than it was originally even though it has the same thread pitch as your original plug. A helicoil might be a possibility but I would re drill/tap the oil pan for a larger (thread) plug. I had to go this route on my pan many years ago.

I'm sure that you didn't want to hear what I just said.

Sorry

Frank

[Greg]

The oil plug that you have is a replacement plug designed to "fix" a stripped out internal thread. The tapered shape with slots re taps the  stripped thread so that the plug can once again be tightened securely. At this point I don't believe that you can go back to a standard plug because the internal thread created by this plug is larger (diameter) than it was originally even though it has the same thread pitch as your original plug. A helicoil might be a possibility but I would re drill/tap the oil pan for a larger (thread) plug. I had to go this route on my pan many years ago.

I'm sure that you didn't want to hear what I just said.

Sorry

Frank

I would rather know the truth then to lie to myself...LOL.  Does anyone have an original plug they would be willing to part with?

[Bob Gaines]

The oil plug that you have is a replacement plug designed to "fix" a stripped out internal thread. The tapered shape with slots re taps the  stripped thread so that the plug can once again be tightened securely. At this point I don't believe that you can go back to a standard plug because the internal thread created by this plug is larger (diameter) than it was originally even though it has the same thread pitch as your original plug. A helicoil might be a possibility but I would re drill/tap the oil pan for a larger (thread) plug. I had to go this route on my pan many years ago.

I'm sure that you didn't want to hear what I just said.

Sorry

Frank

I would rather know the truth then to lie to myself...LOL.  Does anyone have an original plug they would be willing to part with?

PM me if you can't come up with one.