Is this it?
6 wire version.
Any numbers or letters?
No there are no numbers or letters 
Thanks, can’t cross plug to anything…
If that isn’t it I will be amazed. 
I believe I’ll pass on the $78. 
Still looking. Must be oem ford or mazda only.
I found the source in China.
I wonder how many “Think” use the 4 wire sensor plug?
Ya $78 for a piece of plastic is ridiculous. I have only ever seen the six terminal plugs and the service manual I have only shows a six terminal one as well.