Mechanically, electrically and functionally equivalent to the original.
It's much cheaper than replacing the whole assembly, and it's very easy to fit it on the existing PCB if you're even minimally handy with a soldering iron.
Great quality fader, after fitting a few of these I now prefer these to the “original” ones available now.
In fact they calibrate much closer to 2.7k than the original.
And are silky smooth …what more could you ask for!