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.

10 Items

Set Descending Direction
View as Grid List
  1. Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1

    Price $12.99 List Price Price $18.99 Save 31%
  2. Q5562 Omnipure High Purity Deionizing Filter

    Price $27.99 List Price Price $39.99 Save 30%
  3. 41400009 Hydrotech Reverse Osmosis Filter

    Price $15.99 List Price Price $22.99 Save 30%
  4. PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    Price $65.99 List Price Price $94.27 Save 29%
    Free Shipping
  5. WS-20BB Pentek Whole House Filter Replacement Cartridge

    Price $64.99 List Price Price $92.84 Save 29%
    Free Shipping
  6. AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter

    Price $120.99 List Price Price $172.99 Save 30%
    Free Shipping
  7. 1266690 Merlin Merlin Reverse Osmosis Sediment Filter

    Price $27.99 List Price Price $39.99 Save 30%
  8. NCP-10 Pentek Undersink Filter Replacement Cartridge

    Price $13.99 List Price Price $19.99 Save 30%
  9. KDF85-10BB Tier1 Water Filter

    Price $75.99 List Price Price $108.99 Save 30%
    Free Shipping
  10. WS-20 Pentek Water Softening Filter

    Price $39.99 List Price Price $57.13 Save 30%
    Free Shipping

10 Items

Set Descending Direction
View as Grid List