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. P-250 Pentek Comparable Under Sink Water Filter Set by Tier1

    Price $35.99 List Price Price $51.41 Save 29%
  2. MAXVOC-975 Watts C-MAX Water Filter Cartridge

    Price $21.99 List Price Price $31.99 Save 31%
  3. FXSVC GE SmartWater Undersink Filter Set

    Price $71.99 List Price Price $102.99 Save 30%
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  4. MATRIKX-PB1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Price $66.99 List Price Price $95.99 Save 30%
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  5. MAXPB-975 Watts C-MAX Water Filter Cartridge

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

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

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

    Price $27.99 List Price Price $39.99 Save 30%
  9. Doulton W9221000 Super Sterasyl Ceramic Water Filter Replacement

    Price $36.99 List Price Price $52.99 Save 30%
  10. Doulton W9220406 Replacement Ceramic Filter

    Price $34.99 List Price Price $49.99 Save 30%

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