The original water tank was discontinued so this new water kit replaced the original water tank design. The water kit is just tubing with connects and a self threading screw. The installation took promptly 15 to 30 minutes to complete. The most difficult part of the procedure was using the self threading screw provided to fasten the tubing to the refrigerator wall. I found that to be challenging with a hand socket wrench. So I used a drill to get it started and used the hand socket wrench afterwards to complete the installation. The connections to the water lines we're very easy to make. The water kit provided the connections which were easy not to mix up.