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Replacement Water Filters: Undersink

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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  • Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    $22.99 Retail Price:  $31.04
  • AMERICAN-PLUMBER-600R

    AMERICAN-PLUMBER-600R

    $31.99 Retail Price:  $35.06
  • AMERICAN-PLUMBER-DW-2000-RB

    AMERICAN-PLUMBER-DW-2000-RB

    $59.99 Retail Price:  $61.28
  • AQUAPURE-AP-DW85

    AQUAPURE-AP-DW85

    $54.99 Retail Price:  $55.19
  • AQUAPURE-C-COMPLETE

    AQUAPURE-C-COMPLETE

    $66.99 Retail Price:  $88.54
  • WI-BG12000C Body Glove Replacement Filter Cartridge

    WI-BG12000C Body Glove Replacement Filter Cartridge

    $290.21 Retail Price:  $386.95
  • WI-BG3000C Body Glove Replacement Filter Cartridge

    WI-BG3000C Body Glove Replacement Filter Cartridge

    $151.46 Retail Price:  $201.95
  • WI-BG3000R Body Glove Replacement Filter Cartridge

    WI-BG3000R Body Glove Replacement Filter Cartridge

    $138.71 Retail Price:  $184.95
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • CULLIGAN-1000R-D

    CULLIGAN-1000R-D

    $28.99
  • FQSLF GE SmartWater Undersink Filter Set

    FQSLF GE SmartWater Undersink Filter Set (2 Filters)

    $38.99 Retail Price:  $50.00
  • FQSVF GE SmartWater Undersink Filter Set (packaging)
  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge
  • P-250 Pentek Undersink Filter Set

    P-250 Pentek Undersink Filter Set

    $23.99 Retail Price:  $28.99
  • PENTEK-P-250A

    PENTEK-P-250A

    $23.99 Retail Price:  $31.27
  • QC10-CBRR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • QC10-EPR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • WHIRLPOOL-WHAB-6009

    WHIRLPOOL-WHAB-6009

    $36.99 Retail Price:  $77.99
  • Whirlpool WHAB-6010 Replacement Unit B Filter Cartridge

    WHIRLPOOL-WHAB-6010

    $48.99
  • INSINKERATOR-F-201R

    INSINKERATOR-F-201R

    $67.99 Retail Price:  $70.00
  • DUPONT-WFDWC20001

    DUPONT-WFDWC20001

    $14.99 Retail Price:  $22.33
  • DUPONT-WFDWC40001
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $14.99 Retail Price:  $19.99
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter

24 Item(s)

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