Buying OEM replacement water softener parts will save you money if something goes wrong with your softening system. A replacement bypass valve assembly and rotor & seal kits are among the vast collection of water softener parts that will get your softener back to running smoothly again. If you have any questions about the function of your water softener or need to reference a part number, please refer to your system’s owner’s manual. These water softener replacement parts are compatible with the following brands: Whirlpool, Kenmore, EcoPure, GE, Morton, and NorthStar.