Discount Water Filters and Air Filters at Discount Filter Store.com

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Under Sink Water Filter Replacement Cartridges

Don’t settle for a replacement under sink water filter cartridge that simply fits, find one designed and manufactured specifically for your under sink water filter system.

Discount Filter Store has one of the largest selections of undersink filter cartridges. With under sink filter cartridges available in over 15+ different filter medias, 8+ different sizes (5x2½ - 20x4½), and a wide variety of filter life’s ranging from 250 gallons to 50,000+ gallons, you’re guaranteed to find the under sink water filter system and/or replacement cartridges you need. Choose from hundreds of under sink water filter cartridges from some of the industry’s top brands including American Plumber, Crystal Quest, Pentek®, Culligan®, GE, Aqua-Pure®, Whirlpool®, and more.

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  1. OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    Standard 10 inch by 2.5 inch size fits many common filter housings Learn More
    $4.99 MSRP:  $8.04
  2. Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    Proprietary design fits Pentek QC systems exclusively Learn More
  3. AQUAPURE-AP327

    AQUAPURE-AP327

    $37.99
  4. 4373529 Whirlpool Undersink Filter Replacement Cartridge

    4373529 Whirlpool Undersink Filter Replacement Cartridge

    Fits Whirlpool WSC100 filter system Learn More
    $43.99 MSRP:  $50.59
  5. 4373574 Whirlpool Undersink Filter Kit

    4373574 Whirlpool Undersink Filter Kit

    Fits Whirlpool WSC300 and WSC200 filter systems Learn More
  6. 4373575 Whirlpool Undersink Filter Kit

    4373575 Whirlpool Undersink Filter Kit

    Fits Whirlpool WSR413 and WSC200YW filter systems Learn More
    $59.99 MSRP:  $74.74
  7. AMERICAN-PLUMBER-600R

    AMERICAN-PLUMBER-600R

    $31.99 MSRP:  $35.06
  8. AMERICAN-PLUMBER-DW-2000-RB

    AMERICAN-PLUMBER-DW-2000-RB

    $59.99 MSRP:  $61.28
  9. AMERICAN-PLUMBER-DW-200-R

    AMERICAN-PLUMBER-DW-200-R

    $18.99 MSRP:  $21.15
  10. AMERICAN-PLUMBER-W5CIP
  11. AMERICAN-PLUMBER-W5CIP478

    AMERICAN-PLUMBER-W5CIP478

    $16.99 MSRP:  $17.24
  12. AMERICAN-PLUMBER-WCC
  13. AMERICAN-PLUMBER-WGC478

    AMERICAN-PLUMBER-WGC478

    $13.99 MSRP:  $14.94
  14. AMERICAN-PLUMBER-WGCHD

    AMERICAN-PLUMBER-WGCHD

    $34.99 MSRP:  $35.64
  15. AQUAPURE-AP217

    AQUAPURE-AP217

    $36.99
  16. AQUAPURE-AP22

    AQUAPURE-AP22

    $56.05 MSRP:  $75.89
  17. AQUAPURE-AP-250R

    AQUAPURE-AP-250R

    $29.99 MSRP:  $41.39
  18. AQUAPURE-AP317

    AQUAPURE-AP317

    $52.99 MSRP:  $66.69
  19. AQUA-PURE-AP410

    AQUA-PURE-AP410

    $64.99 MSRP:  $71.29
  20. AQUAPURE-AP517

    AQUAPURE-AP517

    $66.99 MSRP:  $70.14
  21. 3M Aqua-Pure AP-C77 Undersink Filter Replacement Cartridge

    AP-C77 3M Aqua-Pure Undersink Filter Replacement Cartridge

    Fits 3M Aqua-Pure undersink water filter systems Learn More
  22. 3M Aqua-Pure AP-C78 Water Filter Replacement Cartridge

    AP-C78 3M Aqua-Pure Undersink Filter Replacement Cartridge

    Fits 3M Aqua-Pure undersink water filter systems Learn More
  23. AQUAPURE-AP-DW70

    AQUAPURE-AP-DW70

    $47.99 MSRP:  $56.34
  24. AQUAPURE-AP-DW80-90

    AQUAPURE-AP-DW80-90

    $116.99 MSRP:  $137.99
  25. AQUAPURE-AP-DW85

    AQUAPURE-AP-DW85

    $54.99 MSRP:  $55.19

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