We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
Undersink Water Filter Replacements
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.
GAC-10 Pentek Comparable Replacement Cartridge by Tier1
Price $23.76 List Price Price $33.99 Save 30%P-250 Pentek Comparable Under Sink Water Filter Set by Tier1
Price $41.82 List Price Price $59.99 Save 30%FQK1R GE Undersink Water Filter Replacement Cartridge
Price $71.99 List Price Price $102.99 Save 30%Free ShippingEV9612-16 Everpure H-104 Replacement Water Filter Cartridge
Price $138.99 List Price Price $198.99 Save 30%Free Shipping3US-PF01 Filtrete Undersink Filter Replacement Cartridge
Price $72.99 List Price Price $103.99 Save 29%Free ShippingFQSVF GE SmartWater Undersink Water Filter Replacement Cartridge Set By Tier1
Price $36.99 List Price Price $52.99 Save 30%W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge
Price $47.99 List Price Price $68.99 Save 30%InSinkErator F-201R Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
Price $131.99 List Price Price $188.99 Save 30%Free ShippingA101 Aries Undersink Comparable Filter Replacement Cartridge by Tier1
Price $55.99 List Price Price $79.99 Save 30%WHEEDF Whirlpool UltraEase Water Filter Pack
Price $62.86 List Price Price $89.99 Save 30%Free Shipping47-5574704 Water Factory Systems FaucetMATE Carbon Block Filter
Price $113.99 List Price Price $162.99 Save 30%Free Shipping