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. 3MROP416-20A 3M Undersink Reverse Osmosis Replacement Filter Cartridge

    Price $45.99 List Price Price $65.99 Save 30%
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  2. 3MRO401-01 3M Under Sink Reverse Osmosis Water Filter System

    Price $573.99 List Price Price $819.99 Save 30%
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  3. 3MROP412-20A 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    Price $48.99 List Price Price $69.99 Save 30%
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  4. 3MROP316 3M Under Sink Reverse Osmosis Replacement Carbon Block Filter Cartridge

    Price $48.99 List Price Price $69.99 Save 30%
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  5. 3MRO301 3M Under Sink Reverse Osmosis Water Filter System

    Price $510.99 List Price Price $729.99 Save 30%
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  6. 208084 Axeon HF5-2540 Commercial Reverse Osmosis Membrane

    Price $241.99 List Price Price $345.99 Save 30%
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  7. WHEERM Whirlpool UltraEase Reverse Osmosis Membrane

    Price $73.99 List Price Price $105.99 Save 30%
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  8. 41400076 Hydrotech Dual Purpose Water Filter

    Price $30.99 List Price Price $44.99 Save 31%
  9. Q5328 Omnipure Water Filter

    Price $15.99 List Price Price $22.99 Save 30%
  10. CQE-RC-04049 Crystal Quest Fluoride Multi Replacement Filter Cartridge

    Price $63.99 List Price Price $91.99 Save 30%
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