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.

18 Products found

Set Descending Direction
Page
View as Grid List
  1. EP-10 Pentek Comparable Whole House Water Filter by Tier1

    Price $12.99 List Price Price $18.99 Save 31%
  2. Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1

    Price $12.99 List Price Price $18.99 Save 31%
  3. 41400009 Hydrotech Reverse Osmosis Filter

    Price $15.99 List Price Price $22.99 Save 30%
  4. 3038333 Merlin Reverse Osmosis Carbon Pre Filter

    Price $41.99 List Price Price $59.99 Save 30%
    Free Shipping
  5. WHERF Whirlpool Reverse Osmosis System Pre and Post Filter Set

    Price $54.99 List Price Price $78.99 Save 30%
    Free Shipping
  6. MAXETW-975 Watts C-MAX Replacement Water Filter Cartridge

    Price $21.99 List Price Price $31.99 Save 31%
  7. MAXVOC-975 Watts C-MAX Water Filter Cartridge

    Price $21.99 List Price Price $31.99 Save 31%
  8. MAXPB-975 Watts C-MAX Water Filter Cartridge

    Price $28.99 List Price Price $41.99 Save 30%
  9. P-250 Pentek Undersink Filter Set

    Price $33.99 List Price Price $48.56 Save 30%
  10. P-250A Pentek Undersink Filter Set

    Price $34.99 List Price Price $49.99 Save 30%
  11. Pentek CFB-PB10 Carbon Block Water Filter

    Price $27.99 List Price Price $39.99 Save 30%

18 Products found

Set Descending Direction
Page
View as Grid List