1. All Filters

2. Water Filter Parts

Water Filter Parts

Find a wide selection of water filter part replacements and accessories for whole house and R/O water filter systems, including filter wrenches, leak detectors, O-rings, and filter brackets. Try quality universal water filter wrenches by SpiroPure, or an OEM wrench from Pentair Pentek or Culligan, such as SW-2 / SW2, SW-1A Spanner Wrench, SW3 / SW-3 150296, SW-4 / SW4, or SW-5 wrenches for large 4.5” or small 2.5” standard filter housings. Also available are whole house, rubber, 4.5”, and 2.5” O-rings by SpiroPure, Culligan, and Pentair Pentek, such as the 151122 O-ring for Big Blue housings. SpiroPure metal water filter housing brackets are pre-drilled for easier installation. SpiroPure leak detectors offer an automatic shut-off valve, plus find the replacement water leak detector device, expanding pads, water trays, and more for most water filters including bigger reverse osmosis systems.