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Replacement Water Filters: Undersink

Keep your kitchen space neat and tidy, while reducing contaminants in your tap water with an under sink water filter system.

The beauty of under sink water filter systems is that they neatly fit underneath your sinks and don’t rob you of valuable counter space as countertop water filters do. Unlike other filter models, with under sink water filters there are no valves or tubing cluttering your counter. Because they remain out of sight, you can install larger under sink water filter models designed to filter out additional water contaminants such as fluorides, arsenic, and nitrates.

Below you’ll find over 60+ OEM under sink water filter systems, housings and filters from some of the top brands, including Pentek®, Culligan®, Whirlpool®, Doulton®, OmniFilter®, and more.

Need help choosing the right under sink water filter system? Our experts can help you choose the perfect under sink water filter to address all of your water quality concerns, just give us a call at 1-800-277-3458.

Items 1 to 48 of 162 total

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  • OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    $4.99 Retail Price:  $8.04
  • Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    $22.99 Retail Price:  $31.04
  • KX-TECHNOLOGIES-32-250-125-050

    KX-TECHNOLOGIES-32-250-125-050

    $9.99 Retail Price:  $10.34
  • KX-MATRIKX-PB1-HD10

    KX-MATRIKX-PB1-HD10

    $59.99
  • KX-MATRIKX-PB1-10
  • KX-MATRIKX-CTO2-10

    KX-MATRIKX-CTO2-10

    $9.99 Retail Price:  $10.34
  • KX-MATRIKX-5-10
  • KX-MATRIKX-1-10

    KX-MATRIKX-1-10

    $10.99 Retail Price:  $14.94
  • KOHLER-K-201

    KOHLER-K-201

    $94.99 Retail Price:  $109.24
  • OMNIFILTER-RS19

    OMNIFILTER-RS19

    $14.99
  • OMNIPURE-OMB934-1L

    OMNIPURE-OMB934-1L

    $14.99 Retail Price:  $21.38
  • ECP5-10 Pentek Undersink Filter Replacement Cartridge

    ECP5-10 Pentek Undersink Filter Replacement Cartridge

    $5.99 Retail Price:  $9.42
  • PENTEK-CRE-1

    PENTEK-CRE-1

    $24.69 Retail Price:  $30.69
  • PENTEK-CCBC-10

    PENTEK-CCBC-10

    $15.99 Retail Price:  $19.31
  • PENTEK-CC-10

    PENTEK-CC-10

    $12.99
  • CBR2-10R Pentek Undersink Filter Replacement Cartridge
  • PENTEK-CBR2-10

    PENTEK-CBR2-10

    $16.99 Retail Price:  $18.85
  • PENTEK-CBC-5

    PENTEK-CBC-5

    $11.99 Retail Price:  $16.55
  • PENTEK-C2

    PENTEK-C2

    $5.99 Retail Price:  $8.84
  • PENTEK-C1

    PENTEK-C1

    $6.99 Retail Price:  $9.42
  • INSINKERATOR-F-201R

    INSINKERATOR-F-201R

    $63.99 Retail Price:  $73.36
  • RS2SS

    RS2SS

    $6.99 Retail Price:  $8.04
  • RS14SS

    RS14SS

    $3.99 Retail Price:  $5.74
  • RS14DS

    RS14DS

    $6.99 Retail Price:  $8.15
  • PENTEK-TSGAC-10

    PENTEK-TSGAC-10

    $19.39 Retail Price:  $24.60
  • PENTEK-R30-478

    PENTEK-R30-478

    $7.99 Retail Price:  $12.75
  • QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • PENTEK-QC10-GACR

    PENTEK-QC10-GACR

    $15.89 Retail Price:  $20.57
  • RS7SS

    RS7SS

    $5.29 Retail Price:  $8.38
  • TO1SS OmniFilter Whole House Filter Replacement Cartridge
  • PENTEK-QC10-EPR

    PENTEK-QC10-EPR

    $22.09 Retail Price:  $27.70
  • PENTEK-EP-5

    PENTEK-EP-5

  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $14.99 Retail Price:  $19.99
  • P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    $2.99 Retail Price:  $5.74
  • P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  • P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    $2.99 Retail Price:  $5.74

Items 1 to 48 of 162 total

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