Discount Water Filters and Air Filters at Discount Filter

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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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15 Item(s)

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  • 4373529


  • 4373574


  • 4373575




    MSRP: $73.99
    Save 51%
  • Whirlpool WHAB-6009 Replacement Unit A Water Filter Cartridge

    WHAB-6009 Whirlpool Replacement Unit A Filter Cartridge

    MSRP: $77.99
    Save 53%
  • Whirlpool WHAB-6010 Replacement Unit B Filter Cartridge

    WHAB-6010 Whirlpool Replacement Unit B Filter Cartridge

    MSRP: $62.09
    Save 21%
  • WHKF-DB1 Whirlpool Undersink Replacement Filter Cartridge
  • Whirlpool WHKF-DB2 Undersink Replacement Water Filter Cartridge


    MSRP: $20.99
    Save 29%
  • WHEEDF Whirlpool UltraEase Water Filter Pack

    WHEEDF Whirlpool UltraEase Water Filter Pack

    MSRP: $59.79
    Save 20%
  • WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1
  • WHKF-GAC Whirlpool Whole House Filter Replacement Cartridge by Tier1

15 Item(s)

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