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. Q5562 Omnipure High Purity Deionizing Filter

    Price $27.99 List Price Price $39.99 Save 30%
  2. BBF1-20MB Pentek Whole House Filter Replacement Cartridge

    Price $139.99 List Price Price $199.99 Save 30%
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  3. PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    Price $65.99 List Price Price $94.27 Save 29%
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  4. PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    Price $38.99 List Price Price $55.70 Save 30%
  5. WS-20BB Pentek Whole House Filter Replacement Cartridge

    Price $64.99 List Price Price $92.84 Save 29%
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  6. AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    Price $39.99 List Price Price $57.99 Save 31%
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  7. WS-20 Pentek Water Softening Filter

    Price $39.99 List Price Price $57.13 Save 30%
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  8. AF-10-3695 Aries Arsenic Removal Water Filter

    Price $69.99 List Price Price $99.99 Save 30%
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  9. CQE-RC-04016 Crystal Quest Multi Stage PLUS Water Filter Cartridge

    Price $159.99 List Price Price $228.99 Save 30%
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