Our #13 steel water filter wrench will be the last wrench you ever need. If you have had trouble getting your housings loose during filter changes or if you have ever broken a plastic wrench, then you need our galvanized water filter wrench. It will not bend, break, or bow.
Inside Diameter (not from the tabs) – 3.75″. Half circle style, with a 3 3/4″ inside diameter, fits Slim Line/RO housings.
Not sure what size filter housing wrench you need? Find the correct one on our Choosing the Right Filter Housing Wrench page.