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Reverse Osmosis Water Filter Replacement Cartridges and Kits

Reverse Osmosis: a water purification technology that utilizes a semi-permeable membrane to remove microscopic particles (typically anything larger than 0.001 microns in size) from drinking water.

Select what type of reverse osmosis filter part you’re searching for (system, filter, etc.) and browse or search through hundreds of our reverse osmosis water filters, systems, membranes, and other water filter parts. Choose from some of the industry’s top reverse osmosis brands including, Watts®, Hydrologic, Hydrotech, and Water Factory Systems.

Not sure if investing in a reverse osmosis water filter is what you want, then check out our thousands of other popular water filters, including whole house, under sink, faucet filters, and many more.

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  1. Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1

    Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1

    Fits Culligan Aqua Cleer and H Series reverse osmosis systems, including the H-5, H-8, H-82, H-83, AC-15, AC-30 and AC-50 Learn More
    $10.99 MSRP:  $20.99
  2. HDG-CB-AC10 Hydronix Comparable PRE-RO Carbon Block Reverse Osmosis Filter by Tier1
  3. FX12P GE SmartWater Comparable Reverse Osmosis Filter by Tier1

    FX12P GE SmartWater Comparable Reverse Osmosis Filter by Tier1

    Fits GE SmartWater reverse osmosis filter systems with model numbers starting with PNRV12, GXRV10, or GXRM10 Learn More

    As Low As $11.99 Per Filter

  4. MAXETW-975 Watts C-MAX Replacement Filter Cartridge

    MAXETW-975 Watts C-MAX Replacement Water Filter Cartridge

    Fits water filtration system housings requiring a 9 3/4-inch x 2 7/8-inch filter Learn More
    $12.59 MSRP:  $18.99
  5. MAXPB-975 Watts C-MAX Replacement Filter Cartridge

    MAXPB-975 Watts C-MAX Water Filter Cartridge

    Fits water filtration system housings that use a 9 3/4-inch x 2 7/8-inch filter Learn More
    $18.99 MSRP:  $27.99
  6. MAXVOC-975 Watts C-MAX Replacement Filter Cartridge

    MAXVOC-975 Watts C-MAX Water Filter Cartridge

    Fits standard 10-inch x 2.5-inch water filtration system housings Learn More
    $18.99 MSRP:  $22.99
  7. 41400009 Hydrotech Reverse Osmosis Filter

    41400009 Hydrotech Reverse Osmosis Filter

    Fits Hydrotech Models from the 1240 Series, 1240 E Series,1240 M Series, 1240 Pro Series, 3VTFC50G, 4VTFC50G, 4VTFC50GPB, F-HT-50, F-HTF-50 and other select models Learn More
    $15.69 MSRP:  $23.99

    Out of stock

  8. 3038333 Merlin Reverse Osmosis Carbon Pre Filter

    3038333 Merlin Reverse Osmosis Carbon Pre Filter

    Fits the GE Merlin Reverse Osmosis System Learn More
    $28.49 MSRP:  $35.99
  9. WSK-1 Water Sentinel Replacement Water Filters

    WSK-1 Water Sentinel Replacement Water Filter

    Fits select Ecowater, Whirlpool or Kenmore water filtration systems Learn More
    $26.99 MSRP:  $33.34
  10. 41400076 Hydrotech Dual Purpose Water Filter41400076 Hydrotech Dual Purpose Water Filter

    41400076 Hydrotech Dual Purpose Water Filter

    Fits Hydrotech HT and HTF Series Reverse Osmosis Water Filtration Systems Learn More
    $17.99 MSRP:  $19.54

    Out of stock

  11. 22080 Hydrologic Reverse Osmosis Carbon Pre-Filter

    22080 Hydrologic Reverse Osmosis Carbon Pre-Filter

    Fits the Merlin-Garden Pro Water Filter System Learn More
  12. WHERF Whirlpool Reverse Osmosis System Pre and Post Filter Set

    WHERF Whirlpool Reverse Osmosis System Pre and Post Filter Set

    Works with Whirpool WHER12 and WHER18 reverse osmosis systems Learn More
    $38.49 MSRP:  $63.99
  13. FQROPF GE Profile SmartWater Ultra Plus Reverse Osmosis Replacement Filter Set By Tier1

    FQROPF GE Profile SmartWater Ultra Plus Reverse Osmosis Replacement Filter Set By Tier1

    Fits GE Profile SmartWater Ultra Plus reverse osmosis filter systems Learn More
    $38.99 MSRP:  $109.99
  14. RO-PL5000 PuROLine Reverse Osmosis Filter System

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