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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Items 1 to 48 of 68 total

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  • 4373529 Whirlpool Undersink Filter Replacement Cartridge

    4373529 Whirlpool Undersink Filter Replacement Cartridge

    $43.99
    MSRP: $50.59
    Save 13%
  • 4373574 Whirlpool Undersink Filter Kit
  • 4373575 Whirlpool Undersink Filter Kit

    4373575 Whirlpool Undersink Filter Kit

    $61.79
    MSRP: $97.99
    Save 37%
  • DW-2000-RB American Plumber Replacement Filter Cartridge

    DW-2000-RB American Plumber Replacement Filter Cartridge

    $59.99
    MSRP: $61.28
    Save 2%
  • 3M Aqua-Pure AP22 Under Sink Water Filter
  • 3M Aqua-Pure AP317 Water Filter Replacement Cartridge

    AP317 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $54.59
    MSRP: $78.99
    Save 31%
  • 3M Aqua-Pure AP410 Water Filter Cartridges

    AP410 3M Aqua-Pure Water Filter Cartridge Set (2-Pack)

    $66.99
    MSRP: $89.99
    Save 26%
  • 3M Aqua-Pure AP517 Water Filter Replacement Cartridge

    AP517 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $69.09
    MSRP: $88.99
    Save 22%
  • AQUAPURE-APC77

    AQUAPURE-APC77

  • AQUAPURE-APC78

    AQUAPURE-APC78

  • AQUAPURE-AP-DW70

    AQUAPURE-AP-DW70

    $47.99
    MSRP: $56.34
    Save 15%
  • AQUAPURE-AP-DW80-90

    AQUAPURE-AP-DW80-90

    $116.99
    MSRP: $137.99
    Save 15%
  • AQUAPURE-AP-DW85

    AQUAPURE-AP-DW85

    $56.59
  • AQUAPURE-C-COMPLETE

    AQUAPURE-C-COMPLETE

    $69.09
    MSRP: $88.54
    Save 22%
  • AQUAPURE-C-CS-FF

    AQUAPURE-C-CS-FF

    $43.99
    MSRP: $48.06
    Save 8%
  • AQUAPURE-C-CYST-FF

    AQUAPURE-C-CYST-FF

    $54.59
    MSRP: $56.34
    Save 3%
  • AQUAPURE-C-LC

    AQUAPURE-C-LC

    $50.99
    MSRP: $65.54
    Save 22%
  • AQUA-PURE-EP35R

    AQUA-PURE-EP35R

    $119.49
    MSRP: $123.04
    Save 3%
  • BODY-GLOVE-WI-BG12000C

    BODY-GLOVE-WI-BG12000C

    $290.21
    MSRP: $330.82
    Save 12%
  • BODY-GLOVE-WI-BG3000C

    BODY-GLOVE-WI-BG3000C

    $158.99
    MSRP: $192.95
    Save 18%
  • BODY-GLOVE-WI-BG3000R

    BODY-GLOVE-WI-BG3000R

    $145.99
    MSRP: $174.95
    Save 17%
  • CB3

    CB3

    $50.99
  • CB6

    CB6

    $83.99
  • CRYSTAL-QUEST-CQE-RC-04002

    CRYSTAL-QUEST-CQE-RC-04002

    $49.49
    MSRP: $65.54
    Save 24%
  • W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    $104.99
    MSRP: $118.30
    Save 11%
  • W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge
  • EV9300-15 Everpure proseries 1500 Replacement Filter Cartridge
  • EV9300-25 Everpure proseries 2500 Replacement Filter Cartridge
  • EV9300-35 Everpure proseries 3500 Replacement Filter Cartridge

    EV9300-35 Everpure proseries 3500 Replacement Filter Cartridge

    $120.49
    MSRP: $170.99
    Save 30%
  • FQSVF GE SmartWater Undersink Filter Set (packaging)
  • FXSVC GE SmartWater Undersink Filter Set

    FXSVC GE SmartWater Undersink Filter Set

    $62.89
    MSRP: $89.99
    Save 30%
  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge

    FXUVC GE SmartWater Undersink Filter Replacement Cartridge

    $56.59
    MSRP: $80.99
    Save 30%
  • GXULQR GE Undersink Water Filter Replacement Cartridge
  • PCC-1 Pentek Undersink Filter Replacement Cartridge

    PCC-1 Pentek Undersink Filter Replacement Cartridge

    $43.29
    MSRP: $58.99
    Save 27%
  • 47-55708G2 Water Factory Systems Replacement Filter Cartridge
  • 47-5574704 Water Factory Systems FaucetMATE Carbon Block Filter
  • Whirlpool WHAB-6010 Replacement Unit B Filter Cartridge

    WHAB-6010 Whirlpool Replacement Unit B Filter Cartridge

    $48.99
    MSRP: $62.09
    Save 21%
  • FXSLC GE SmartSetWater Undersink Filter
  • F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
  • K-201 Kohler Undersink Replacement Filter Cartridge

    K-201 Kohler Undersink Water Filter Cartridge Replacement

    $96.99
    MSRP: $132.60
    Save 27%
  • K-202 Kohler Undersink Replacement Filter Cartridge

    K-202 Kohler Undersink Water Filter Cartridge

    $129.99
    MSRP: $173.40
    Save 25%
  • MATRIKX-Pb1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • RS4-DS OmniFilter Whole House Filter Replacement Cartridge (2-Pack)
  • W9222910 Doulton Replacement Ceramic Filter

    W9222910 Doulton Supercarb Replacement Ceramic Filter

    $43.85
    MSRP: $52.73
    Save 17%
  • W9123085 Doulton Imperial UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121302 Doulton Imperial Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)

Items 1 to 48 of 68 total

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