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.

Items 1 to 48 of 181 total

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  • OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    $4.99
    MSRP: $8.04
    Save 38%
  • Pentek QC10-CB1R Carbon Block Quick Change Filter
  • AP327 3M Aqua-Pure Water Filter Replacement Cartridge
  • 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

    $59.99
    MSRP: $74.74
    Save 20%
  • 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    $31.99
    MSRP: $35.06
    Save 9%
  • DW-2000-RB American Plumber Replacement Filter Cartridge

    DW-2000-RB American Plumber Replacement Filter Cartridge

    $59.99
    MSRP: $61.28
    Save 2%
  • DW-200-R American Plumber Undersink Filter Replacement Cartridge
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)
  • WCC American Plumber Undersink Filter Replacement Cartridge

    WCC American Plumber Undersink Filter Replacement Cartridge

    $19.99
    MSRP: $26.44
    Save 24%
  • WGC478 American Plumber Undersink Compact Filter Replacement Cartridge
  • WGCHD American Plumber Undersink Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP217 Under Sink Water Filter

    3M Aqua-Pure AP217 Undersink Filter Replacement Cartridge

    $36.99
    MSRP: $86.53
    Save 57%
  • 3M Aqua-Pure AP22 Under Sink Water Filter
  • 3M Aqua-Pure AP-250R Under Sink Water Filter

    AP-250R 3M Aqua-Pure Undersink Water Filter Cartridge

    $29.99
    MSRP: $41.39
    Save 28%
  • 3M Aqua-Pure AP317 Water Filter Replacement Cartridge

    AP317 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $52.99
    MSRP: $66.69
    Save 21%
  • 3M Aqua-Pure AP410 Water Filter Cartridges

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

    $64.99
    MSRP: $71.29
    Save 9%
  • 3M Aqua-Pure AP517 Water Filter Replacement Cartridge

    AP517 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $66.99
    MSRP: $70.14
    Save 4%
  • 3M Aqua-Pure AP-C77 Undersink Filter Replacement Cartridge
  • 3M Aqua-Pure AP-C78 Water Filter Replacement Cartridge
  • 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

    $54.99
  • AQUAPURE-C-COMPLETE

    AQUAPURE-C-COMPLETE

    $66.99
    MSRP: $88.54
    Save 24%
  • AQUAPURE-C-CS-FF

    AQUAPURE-C-CS-FF

    $43.99
    MSRP: $48.06
    Save 8%
  • AQUAPURE-C-CS-S

    AQUAPURE-C-CS-S

    $37.99
    MSRP: $42.54
    Save 11%
  • AQUAPURE-C-CYST-FF

    AQUAPURE-C-CYST-FF

    $52.99
    MSRP: $56.34
    Save 6%
  • AQUAPURE-C-LC

    AQUAPURE-C-LC

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

    AQUA-PURE-EP35R

    $115.99
    MSRP: $123.04
    Save 6%
  • ARIES-A101

    ARIES-A101

    $33.99
    MSRP: $49.21
    Save 31%
  • WI-BG12000C Body Glove Replacement Filter Cartridge

    WI-BG12000C Body Glove Replacement Filter Cartridge

    $290.21
    MSRP: $386.95
    Save 25%
  • WI-BG3000C Body Glove Replacement Filter Cartridge

    WI-BG3000C Body Glove Replacement Filter Cartridge

    $158.99
    MSRP: $192.95
    Save 18%
  • WI-BG3000R Body Glove Replacement Filter Cartridge

    WI-BG3000R Body Glove Replacement Filter Cartridge

    $145.99
    MSRP: $174.95
    Save 17%
  • CB1

    CB1

    $33.99
  • CB3

    CB3

    $50.99
  • CB6

    CB6

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

    CRYSTAL-QUEST-CQE-RC-04002

    $47.99
    MSRP: $65.54
    Save 27%
  • CULLIGAN-1000R-D

    CULLIGAN-1000R-D

    $28.99
  • CULLIGAN-750R-D

    CULLIGAN-750R-D

    $17.99
  • CULLIGAN-D-10-TWIN

    CULLIGAN-D-10-TWIN

    $13.99
    MSRP: $17.93
    Save 22%
  • CULLIGAN-D-15

    CULLIGAN-D-15

    $18.99
    MSRP: $25.29
    Save 25%
  • CULLIGAN-D-20

    CULLIGAN-D-20

    $14.99
  • CULLIGAN-D-250A

    CULLIGAN-D-250A

    $30.99
    MSRP: $39.09
    Save 21%
  • D-28 Culligan Level 1 Undersink Filter Replacement Cartridge
  • CULLIGAN-D-30

    CULLIGAN-D-30

    $24.99
  • CULLIGAN-D-40

    CULLIGAN-D-40

    $33.99
    MSRP: $38.51
    Save 12%

Items 1 to 48 of 181 total

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