Product review (5 stars): Be sure to run water through
Works fine. Can't see any difference from OEM. This, like any charcoal filter, you will need to run several pitchers of water through your door until it clears up.  That is just he nature of charcoal filters.  I am not sure i you could shove it up to your faucet and "pre-clean" it or not. I didn't think to try that. Might on the next one.