Product review (5 stars): Perfect replacement for the UKF-8001 in my KitchenAid
Soaked the filter before installing per mfr instructions. Absolutely no problem installing, no leaks. (Note to everybody having problems--if you compare the cartridge including the fitting to your existing filter, and it is identical with no defects like a damaged O-ring, how can it not fit?) To get back on track, I like the fact that these filters are more environmentally-friendly, and cost less. My only concern is that one reviewer says they actually cost more, since they only filter 300 gallons versus 750 for the PUR. I'm not sure if that's going to be an issue for us, since I doubt we go through 300 gallons in 6 months, and you should replace any filter every 6 months, always. A related concern is that my fridge has a light that comes on telling me when to replace the filter. I don't know if it monitors by tracking gallons that flow through, or time. If gallons, it is going to be wrong if this filter has different gallon limit than OEM filter. So, depending on validity of these concerns, maybe it should be a three-star review?