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
TS-500 Culligan Large Capacity Inline Filter Replacement Cartridge
DD-7098 Daewoo Inline Filter
W9142010 Doulton Replacement DCB10 Carbon Block
FQK1K GE SmartWater Inline Filter Replacement Cartridge
GXULQ GE Undersink Filter System
GXULQR GE Undersink Water Filter Replacement Cartridge
ICF-10 Hydronix Inline Coconut Carbon Filter
ICF-10Q Hydronix Inline Coconut Carbon Filter
ICF-10Q38 Hydronix Inline Coconut Carbon Filter
ICF-2512 Hydronix Inline Coconut Carbon Filter
ICF-6 Hydronix Inline Coconut Carbon Filter
ICF-6Q Hydronix Inline Coconut Carbon Filter
ISF-10 Hydronix Sediment Inline Filter
R200 OmniFilter Inline Water Filtration System

2 Item(s)

Grid  List 

Set Ascending Direction
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • WP-5 Pentek Comparable Replacement Filter Cartridge by Tier1

2 Item(s)

Grid  List 

Set Ascending Direction
Scroll To Top