Product review (5 stars): Good replacement, looks different than original
It wasn't long after getting an LG machine that I started getting the dreaded "IE" error message (intake error).  That meant the filter on the cold water intake line had to be cleaned or replaced.  A quick google took me here.

Note that these filters didn't look like the original existing filter (the existing one was light blue, shallower, and had a metal screen), but these actually work better (the deeper cup makes it easier to remove and clean).

I have the machine hooked up to well water, so sediment builds up constantly.  Pulling the old filter eventually damaged it (since it was shallow, I had to push it in deeper with a set of needlenose pliers), so these replacements were very helpful.

I had to change these filters often until I installed an in-line water filter on the line.  If you're having to replace these filters often, consider an inline fileter.