Common choke replacement?

Hello! Anyone that can help me figure out a replacment choke for a line filter in a amplifier? The part says MLF 16-004. T21 in service manual but nothing else. What could it be?
T21.png

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Thanks mate! I will check that out.

It's making high pitch noise and coming smoke from it. Pulled it and tested with LCR meter and eatch coil are reading different values so i guessed it is bad?

Edit. I had another choke that i tested and both sides read the same inductance but this part read totaly different on each side.
 
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That is a 3Amp ish, common mode choke.
Available from most suppliers; Mouser, RS, Farnell etc. Even fleabay if you have nerves of steel!
https://uk.rs-online.com/web/p/leaded-inductors/8164761?gb=a

Is it burnt out then?
Looks OK from your photo.

They come in all sorts of chapes and sizes.
Thanks mate! I will check that out.

It's making high pitch noise and coming smoke from it. Pulled it and tested with LCR meter and eatch coil are reading different values so i guessed it is bad?

Edit. I had another choke that i tested and both sides read the same inductance but this part read totaly different on each side.