The first sign of trouble was a drip under the water filter area every time I changed the cartridge. I thought I had seated the filter poorly, so I removed it, installed it again, and still saw moisture around the housing. Over time the filter became harder to twist in and out, and the water taste seemed inconsistent. I searched Appliance Parts 4 All for the part number and found the Whirlpool refrigerator water filter housing. The listing explained that the housing holds the water filter securely and that wear, frequent filter changes, pressure issues, or over-tightening can cause cracks and leaks. The part I ordered was
WPW10121140, a Whirlpool refrigerator water filter housing for the water filtration system. I liked that the symptoms listed on the site matched my situation closely. The part arrived well packed, and I shut off the water before starting the repair. I removed the old housing and found a small crack near the connection area. The new housing fit properly, and the filter locked into place with a much cleaner feel. After flushing water through the system, I checked for leaks and found none. It was a neat repair that solved an annoying problem.