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

When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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.

Clear All
Compare

Items 1 to 48 of 186 total

Page:
  1. 1
  2. 2
  3. 3
  4. 4

Grid  List 

Set Descending Direction
  • OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    $4.99
    MSRP: $11.99
    Save 58%
  • Pentek QC10-CB1R Carbon Block Quick Change Filter
  • AQUAPURE-AP327

    AQUAPURE-AP327

    $37.49
    MSRP: $37.94
    Save 1%
  • 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

    4373575

    $61.79
    MSRP: $74.74
    Save 17%
  • 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%
  • AMERICAN-PLUMBER-DW-200-R

    AMERICAN-PLUMBER-DW-200-R

    $19.59
    MSRP: $21.15
    Save 7%
  • 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
  • AQUAPURE-AP217

    AQUAPURE-AP217

    $37.49
  • 3M Aqua-Pure AP22 Under Sink Water Filter
  • AQUAPURE-AP-250R

    AQUAPURE-AP-250R

    $30.89
    MSRP: $41.39
    Save 25%
  • AQUAPURE-AP317

    AQUAPURE-AP317

    $54.59
    MSRP: $66.69
    Save 18%
  • AQUA-PURE-AP410

    AQUA-PURE-AP410

    $66.99
    MSRP: $71.29
    Save 6%
  • AQUAPURE-AP517

    AQUAPURE-AP517

    $69.09
    MSRP: $70.14
    Save 1%
  • 3M Aqua-Pure AP-C77 Undersink Filter Replacement Cartridge
  • 3M Aqua-Pure AP-C78 Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP-DW70 Undersink Filter Replacement Cartridge

    AP-DW70 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $47.99
    MSRP: $56.34
    Save 15%
  • AP-DW80/90 3M Aqua-Pure Water Filter Set

    AP-DW80/90 3M Aqua-Pure Pre and Post Filter Set

    $116.99
    MSRP: $173.90
    Save 33%
  • AQUAPURE-AP-DW85

    AQUAPURE-AP-DW85

    $56.59
  • AQUAPURE-C-COMPLETE

    AQUAPURE-C-COMPLETE

    $69.09
    MSRP: $88.54
    Save 22%
  • C-CS-FF 3M Aqua-Pure Undersink Water Filter

    C-CS-FF 3M Aqua-Pure Undersink Water Filter Cartridge

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

    AQUAPURE-C-CS-S

    $37.49
    MSRP: $42.54
    Save 12%
  • AQUAPURE-C-CYST-FF

    AQUAPURE-C-CYST-FF

    $54.59
    MSRP: $56.34
    Save 3%
  • C-LC 3M Aqua-Pure Undersink Water Filter

    C-LC 3M Aqua-Pure Undersink Water Filter Cartridge

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

    AQUA-PURE-EP35R

    $119.49
    MSRP: $123.04
    Save 3%
  • A101 Aries Undersink Filter Replacement Cartridge
  • 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

    $34.99
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • CB6 OmniFilter Whole House Filter Replacement Cartridge
  • CRYSTAL-QUEST-CQE-RC-04002

    CRYSTAL-QUEST-CQE-RC-04002

    $49.49
    MSRP: $65.54
    Save 24%
  • CULLIGAN-1000R-D

    CULLIGAN-1000R-D

    $29.79
  • CULLIGAN-750R-D

    CULLIGAN-750R-D

    $18.49
  • D-10-TWIN Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
  • CULLIGAN-D-15

    CULLIGAN-D-15

    $19.59
    MSRP: $25.29
    Save 23%
  • CULLIGAN-D-20

    CULLIGAN-D-20

    $15.39
  • CULLIGAN-D-250A

    CULLIGAN-D-250A

    $31.99
    MSRP: $39.09
    Save 18%
  • D-28 Culligan Level 1 Undersink Filter Replacement Cartridge
  • CULLIGAN-D-30

    CULLIGAN-D-30

    $25.69
  • CULLIGAN-D-40

    CULLIGAN-D-40

    $34.99
    MSRP: $38.51
    Save 9%

Items 1 to 48 of 186 total

Page:
  1. 1
  2. 2
  3. 3
  4. 4

Grid  List 

Set Descending Direction
Scroll To Top