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Undersink Water Filters

W385-PR American Plumber Undersink Compact Filter System
American Plumber is a trusted name in water filtration that offers you peace of mind with their high quality products. The American Plumber W385-PR compact filter housing conveniently fits in a small space under your sink and provides quality filtration for better tasting drinking water.
Our Price: $14.99
Compare At: $16.99
You Save: $2.00 (12%)
In Stock: Yes
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WCC American Plumber Undersink Filter Replacement Cartridge
Fits American Plumber W38-PR and most standard size water filter housings.
Our Price: $12.99
Compare At: $16.99
You Save: $4.00 (24%)
In Stock: Yes
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WGCHD American Plumber Undersink Filter Replacement Cartridge
Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings.
Our Price: $24.99
Compare At: $28.99
You Save: $4.00 (14%)
In Stock: Yes
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W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)
Fits American Plumber W385-PR.
Our Price: $11.99
Compare At: $14.99
You Save: $3.00 (20%)
In Stock: Yes
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WGC478 American Plumber Undersink Compact Filter Replacement Cartridge
Fits American Plumber WGC478.
Our Price: $9.99
Compare At: $12.99
You Save: $3.00 (23%)
In Stock: Yes
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W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
Fits American Plumber W38-PR and most standard size water filter housings.
Our Price: $13.99
Compare At: $16.99
You Save: $3.00 (18%)
In Stock: Yes
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DW-200-R American Plumber Undersink Filter Replacement Cartridge
Fits Cuno AP-200 and PurWater PW-200 housings.
Our Price: $13.99
Compare At: $16.99
You Save: $3.00 (18%)
In Stock: Yes
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RWC-5 American Plumber Undersink Filter Replacement Cartridge
Fits most standard size water filter housings.
This item has been discontinued.
US-600 Culligan Slim Undersink Filter System
Easy to install water filtration system with filter head, filter housing, and built-in mounting bracket.
Our Price: $26.99
Compare At: $37.99
You Save: $11.00 (29%)
In Stock: Yes
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D-10-TWIN Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
Fits Culligan US-550, US-600, US-600A, SY-2000, SY-2100, and any brand of water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges.
  • Compatible with 155528-131, 34370, 432644, 47563, 49642, 583-377, D-10, D-10-TWIN, WHCF-WHWC, WHKF-WHWC… see all part numbers related to the D-10-TWIN
  • Lasts up to 3 months (each filter)
  • Removes Chlorine, Bad Taste and Odor, Sediment
  • Genuine OEM Filter
Our Price: $10.99
Compare At: $15.99
You Save: $5.00 (31%)
In Stock: Yes
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D-15 Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
Fits Culligan US-550, US-600, US-600A, RO-3000, RO-3500, RVF-10 and any brand of water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $15.99
Compare At: $19.99
You Save: $4.00 (20%)
In Stock: Yes
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D-20A Culligan Level 1 Undersink Filter Replacement Cartridge
Fits Culligan US-550, US-600, US-600A, RO-2127, RO-3000, RO-3500, and any brand of water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges.
  • Compatible with 3436517, 34375, 38509, 4234375, 432636, 49640, 826-746, D-20, D-20A, TO2… see all part numbers related to the D-20A
  • Lasts up to 12 months
  • Removes Chlorine, Bad Taste and Odor
  • Genuine OEM Filter
Our Price: $7.99
Compare At: $14.99
You Save: $7.00 (47%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
D-28 Culligan Level 1 Undersink Filter Replacement Cartridge
Fits Culligan US-550, US-600, US-600A, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
This item has been discontinued.
D-30 Culligan Level 2 Undersink Filter Replacement Cartridge
Fits Culligan US-550, US-600, US-600A, SY-2000, SY-2100, and any brand of water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $12.99
Compare At: $21.99
You Save: $9.00 (41%)
In Stock: Yes
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D-40 Culligan Level 4 Undersink Filter Replacement Cartridge
Fits Culligan US-550, US-600, US-600A, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $24.99
Compare At: $33.99
You Save: $9.00 (26%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
D-250A Culligan Undersink Filter Replacement Cartridge Set
Fits the Culligan SY-2300, SY-2300S and SY-2650 systems and any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $29.99
Compare At: $33.99
You Save: $4.00 (12%)
In Stock: Yes
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RWC-5 Culligan Level 1 Undersink Filter Replacement Cartridge
Fits Culligan Fulflo, WC12, LCA, WS-12, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $10.49
Compare At: $14.99
You Save: $4.50 (30%)
In Stock: Yes
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US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
Easy to install undersink water filter system with twist on / twist off mechanism. Comes with one lead-free faucet.
Our Price: $29.99
Compare At: $40.99
You Save: $11.00 (27%)
In Stock: Yes
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RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge
Fits Culligan Easy-Change filter systems including IC-EZ-1, US-EZ-1, and RV-EZ-1.
  • Compatible with 4294146, 4294153, 4294161, RC-EZ-1, RC-EZ-3, RC-EZ-4… see all part numbers related to the RC-EZ-1
  • Lasts up to 12 months
  • Removes Chlorine, Bad Taste and Odor, Particulates (Class III)
  • Genuine OEM Filter
Our Price: $10.99
Compare At: $17.99
You Save: $7.00 (39%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
US-EZ-3 Culligan Level 3 Easy-Change Undersink Filter System
Easy to install undersink water filter system with twist on / twist off mechanism. Comes with one lead-free faucet.
Our Price: $45.99
Compare At: $57.99
You Save: $12.00 (21%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge
Fits Culligan Easy-Change filter systems including IC-EZ-3, US-EZ-3, and RV-EZ-3.
Our Price: $19.99
Compare At: $27.99
You Save: $8.00 (29%)
This item is currently out of stock.
US-EZ-4 Culligan Level 4 Easy-Change Undersink Filter System
Easy to install undersink water filter system with twist on / twist off mechanism. Comes with one lead-free faucet.
Our Price: $64.99
Compare At: $79.99
You Save: $15.00 (19%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge
Fits Culligan Easy-Change filter systems including IC-EZ-4, US-EZ-4, and RV-EZ-4.
Our Price: $32.99
Compare At: $41.99
You Save: $9.00 (21%)
In Stock: Yes
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750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter
Fits Culligan SY-750s, RV-750, IC-750, SY-1000, SY-1000s, RV-1000, and IC-1000 filter systems.
  • Compatible with 600R, 1000R, 1000R-D, 155785, 155785-43, 155785-51, 155901, 155901-43, 255706-43, 4194338, 4194346, 4194353, 4201661, 750R, 750R-D, QC10… see all part numbers related to the 750R-D
  • Lasts up to 12 months
  • Removes Chlorine, Bad Taste and Odor
  • Genuine OEM Filter
Our Price: $10.99
Compare At: $15.99
You Save: $5.00 (31%)
This item is currently out of stock.
1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
Fits Culligan SY1000, SY-1000s, IC-1000, RV-1000, SY-750s, IC-750, and RV-750 filter systems.
Our Price: $19.99
Compare At: $25.99
You Save: $6.00 (23%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
67003662 Maytag Undersink Filter Replacement Cartridge
Fits Maytag undersink water filter systems.
Our Price: $35.99
Compare At: $39.99
You Save: $4.00 (10%)
Usually ships in 3-5 days
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP22 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $59.28
This item is currently out of stock.
AP200 Aqua-Pure Undersink Filter System
The Aqua-Pure AP200 Undersink water filter system reduces sediment, chlorine taste and odor for cleaner drinking water.
List Price: $114.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP217 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $30.81
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP-250R Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $31.55
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP317 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $53.44
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP327 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $31.33
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP517 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $62.01
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP-C77 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
This item has been discontinued.
AP-C78 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
This item has been discontinued.
AP-DW70 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $45.07
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP-DW80/90 Aqua-Pure Pre and Post Filter Set
Fits Aqua-Pure water filter systems.
List Price: $113.04
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP-DW85 Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $45.02
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C-COMPLETE Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $76.21
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C-CS-FF Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $40.22
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C-CS-S Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $35.79
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C-CYST-FF Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $47.44
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C-LC Aqua-Pure Undersink Filter Replacement Cartridge
Fits Aqua-Pure undersink water filter systems.
List Price: $55.66
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
AP5527 Aqua-Pure Reverse Osmosis Pre and Post Filter Set
Fits Aqua-Pure RO5000 and RO5500 reverse osmosis water filter systems.
List Price: $89.64
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
RO3RC Aqua-Pure Reverse Osmosis Pre and Post Filter Set
Fits the Aqua-Pure APRO3 reverse osmosis water filter system.
This item has been discontinued.
AP5500RM Aqua-Pure Reverse Osmosis Membrane
Fits the Aqua-Pure RO5500 reverse osmosis water filter system.
List Price: $135.71
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
RM-CTA Aqua-Pure Reverse Osmosis Membrane
Fits Aqua-Pure reverse osmosis water filter systems.
This item has been discontinued.
RM-TFC Aqua-Pure Reverse Osmosis Membrane
Fits the Aqua-Pure RO5500 reverse osmosis water filter system.
List Price: $210.54
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FXUVC GE SmartWater Undersink Filter Replacement Cartridge
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $29.99
Compare At: $34.99
You Save: $5.00 (14%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FXULC GE SmartWater Undersink Filter Replacement Cartridge
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
  • Compatible with FXULC, AP3418046, PS220407… see all part numbers related to the FXULC
  • Lasts up to 6 months
  • Removes Chlorine, Lead, Mercury, Asbestos, Cysts, Atrazine, Lindane, Turbidity
  • Genuine OEM Filter
  • Made in U.S.A.
Our Price: $16.99
Compare At: $22.99
You Save: $6.00 (26%)
This item is currently out of stock.
FXUTC GE SmartWater Undersink Filter Replacement Cartridge
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $12.60
Compare At: $18.99
You Save: $6.39 (34%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FXSVC GE SmartWater Undersink Filter Set
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $29.99
Compare At: $35.99
You Save: $6.00 (17%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FQSLF GE SmartWater Undersink Filter Set
Fits GE SmartWater undersink filter systems.
Our Price: $30.99
Compare At: $35.99
You Save: $5.00 (14%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FQSVF GE SmartWater Undersink Filter Set
Fits GE SmartWater undersink filter systems.
Our Price: $35.99
Compare At: $39.99
You Save: $4.00 (10%)
This item is currently out of stock.
GXULQ GE Undersink Filter System
The GE GXULQ kitchen or bath filtration system offers a premium quality filter head and cartridge that fits conveniently under your sink. The high flow rate on the filter cartridge means you can enjoy better tasting water anywhere in your home without having to add a separate faucet for filtered water. This makes the GXULQ an ideal choice for use in both kitchen and bathroom sinks and faucets.
Our Price: $51.99
This item is currently out of stock.
GXULQR GE Undersink Filter Replacement Cartridge
Fits the GE GXULQ and GNULQ Systems.
Our Price: $28.99
In Stock: Yes
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GXRLQ GE SmartWater Inline Filter System
Fits any 1/4 inch plastic or copper water line.
Our Price: $23.69
Compare At: $28.99
You Save: $5.30 (18%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
GXRLQR GE SmartWater Inline Filter Replacement Cartridge
Fits the GE SmartWater GXRLQ filter system.
Our Price: $20.99
Compare At: $26.99
You Save: $6.00 (22%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
GXRTDR GE SmartWater Inline Filter Cartridge
Fits any 1/4 inch plastic or copper water line.
Our Price: $9.99
Compare At: $11.99
You Save: $2.00 (17%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FX12P GE SmartWater Reverse Osmosis Filter Set
Fits GE SmartWater reverse osmosis filter systems with model numbers starting with "PNRV12", "GXRV10", or "GXRM10".
Our Price: $33.99
Compare At: $40.99
You Save: $7.00 (17%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FX12M GE SmartWater Reverse Osmosis Membrane
Fits GE SmartWater reverse osmosis filter systems with model numbers starting with "PNRV12", "GXRV10", or "GXRM10".
Our Price: $48.99
Compare At: $54.99
You Save: $6.00 (11%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FX18P GE SmartWater Reverse Osmosis Filter Set
Fits GE SmartWater reverse osmosis filter systems with model numbers starting with "NRV18".
Our Price: $46.99
This item is currently out of stock.
FX18M GE SmartWater Reverse Osmosis Membrane
Fits GE SmartWater reverse osmosis filter systems with model numbers starting with "NRV18".
Our Price: $72.99
Compare At: $86.99
You Save: $14.00 (16%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
FQROPF GE Profile SmartWater Ultra Plus Reverse Osmosis Filter Set
Fits GE Profile SmartWater Ultra Plus reverse osmosis filter systems.
Our Price: $33.99
Compare At: $43.99
You Save: $10.00 (23%)
In Stock: Yes
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FQROMF GE Profile SmartWater Ultra Plus Reverse Osmosis Membrane
Fits GE Profile SmartWater Ultra Plus reverse osmosis filter systems.
Our Price: $59.99
Compare At: $69.99
You Save: $10.00 (14%)
This item is currently out of stock.
BF7-S-05 OmniFilter Undersink Filter System
Fits standard 1 inch NPS supply threads.
Our Price: $56.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CBF1-S-05 OmniFilter Undersink Filter System
Fits standard 1/2 inch NPS supply threads.
Our Price: $57.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
OB1-S-05 OmniFilter Undersink Filter System
Fits standard 3/4 inch MPT lines.
Our Price: $15.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
OB5-S-05 OmniFilter Undersink Filter System
Fits standard 3/4 inch MPT lines.
Our Price: $18.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CBF3-S-05 OmniFilter Undersink Filter System
Fits standard 1/2 inch NPS supply threads.
Our Price: $69.99
Compare At: $77.99
You Save: $8.00 (10%)
This item is currently out of stock.
CBF2-S-05 OmniFilter Undersink Filter System
Fits standard 1/2 inch NPS supply threads.
Our Price: $54.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
RS2-SS OmniFilter Whole House Filter Replacement Cartridge
Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $3.99
Compare At: $8.99
You Save: $5.00 (56%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
GAC1SS OmniFilter Series C Undersink Filter Replacement Cartridge
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $8.49
Compare At: $12.99
You Save: $4.50 (35%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CB1 OmniFilter Undersink Filter Replacement Cartridge
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
  • Compatible with 255972, BC1, CB1, CB1-R-01, CB1-R-02, CB1-SS, CB1-SS6-05, WHCF-DB1, WHCF-DUF, WHKF-DB1, WHKF-DUF… see all part numbers related to the CB1
  • Lasts up to 6 months
  • Removes Chlorine, Cysts, Sediment, Rust
  • Genuine OEM Filter
  • Made in U.S.A.
Our Price: $17.99
Compare At: $23.99
You Save: $6.00 (25%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CB3 OmniFilter Undersink Filter Replacement Cartridge
Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $32.99
This item is currently out of stock.
R200 OmniFilter Inline Filter System
Fits any 1/4 inch plastic or copper water line.
  • Compatible with R200, 18001001, 18001009, 18001010, 25004006, 25004018, 25004022, 25004082, 3010541600, 3019974100, 3650JD8050A, 3890JC2990A, 4210359, 4… see all part numbers related to the R200
  • Lasts up to 12 months
  • Removes Chlorine, Sediment, Rust
  • Genuine OEM Filter
Our Price: $10.49
Compare At: $15.99
You Save: $5.50 (34%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
OM1 OmniFilter Reverse Osmosis Membrane
Fits Omni RO2000 and RO2000-TDS reverse osmosis water filter systems.
  • Compatible with OM1, MM-TFF, OM1-S, OM1-S-02, OM1-S-03, OM1-S4-05… see all part numbers related to the OM1
  • Lasts up to 24 months
  • Removes Chlorine, Rust, Sediment, Cysts, Asbestos, Lead, VOC's, MTBE, Mercury
  • Genuine OEM Filter
Our Price: $41.99
Compare At: $56.99
You Save: $15.00 (26%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
3US-AS01 Filtrete Undersink Filter System
Our Price: $33.99
Compare At: $45.99
You Save: $12.00 (26%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
3US-AF01 Filtrete Undersink Filter Replacement Cartridge
Fits Filtrete 3US-AS01, 3US-PS01, and Whirlpool WHCF-SUF, WHCF-SUFC water filter systems.
  • Compatible with 3US-AF01, 3US-PF01, 4306791, 4306809, 4306817, 4306825, WHCF-SR, WHCF-SRC, WHCF-SUF, WHCF-SUFC, WHKF-SR, WHKF-SRC, WHKF-SUF, WHKF-SUFC… see all part numbers related to the 3US-AF01
  • Lasts up to 6 months
  • Removes Chlorine, Bad Taste and Odor, Sediment, Sand, Soil, Silt, Rust
  • Made in U.S.A.
Our Price: $18.59
Compare At: $28.99
You Save: $10.40 (36%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
3US-PS01 Filtrete Undersink Filter System
Our Price: $47.99
Compare At: $60.99
You Save: $13.00 (21%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
3US-PF01 Filtrete Undersink Filter Replacement Cartridge
Fits Filtrete 3US-AS01, 3US-PS01, and Whirlpool WHCF-SUF, WHCF-SUFC water filter systems.
Our Price: $29.99
Compare At: $40.99
You Save: $11.00 (27%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
F-201 InSinkErator Instant Hot Water Dispenser Filtration System
Fits InSinkErator Series 1100 and 2200 Instant Hot Water Dispensers.
Our Price: $72.99
Compare At: $82.99
You Save: $10.00 (12%)
This item is currently out of stock.
F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
Fits the InSinkErator F-201 Water Filtration System, and all Series 1100 and 2200 Instant Hot Water Dispensers.
  • Compatible with F-201R, F-601R… see all part numbers related to the F-201R
  • Lasts up to 12 months (each filter)
  • Removes Chlorine, Bad Taste and Odor, Particulates (Class I), Sediment
  • Genuine OEM Filter
  • Made in U.S.A.
Our Price: $55.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)
Fits the InSinkErator F-201 Water Filtration System, and all Series 1100 and 2200 Instant Hot Water Dispensers.
Our Price: $103.99
Compare At: $117.99
You Save: $14.00 (12%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
4373529 Whirlpool Undersink Filter Replacement Cartridge
Fits Whirlpool WSC100 filter system.
Our Price: $29.99
Compare At: $33.99
You Save: $4.00 (12%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
4373574 Whirlpool Undersink Filter Kit
Fits Whirlpool WSC300 and WSC200 filter systems.
Our Price: $104.99
Compare At: $118.99
You Save: $14.00 (12%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
4373575 Whirlpool Undersink Filter Kit
Fits Whirlpool WSR413 and WSC200YW filter systems.
  • Compatible with 4373575, 4373502, 4373503, 4373504… see all part numbers related to the 4373575
  • Lasts up to 6 months
  • Removes Chlorine, Particulates, Lead, Cysts, Bad Taste and Odor, Sediment
  • Genuine OEM Filter
  • Made in U.S.A.
Our Price: $64.99
Compare At: $75.99
You Save: $11.00 (14%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
OMB934-1L Omnipure Alpha Series Undersink Filter Replacement Cartridge
Fits any brand of undersink or whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges.
Our Price: $14.99
Compare At: $16.99
You Save: $2.00 (12%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
MATRIKX-Pb1-10 KX Tech MatrikX Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $12.99
Compare At: $14.99
You Save: $2.00 (13%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
MATRIKX-Pb1-HD10 KX Tech MatrikX Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 4 1/2 inch replacement filter cartridges.
Our Price: $38.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
MATRIKX-CTO2-10 KX Tech MatrikX Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $7.99
Compare At: $9.99
You Save: $2.00 (20%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
MATRIKX-1-10 KX Tech MatrikX Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $9.99
Compare At: $11.99
You Save: $2.00 (17%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
MATRIKX-5-10 KX Tech MatrikX Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $11.99
Compare At: $13.99
You Save: $2.00 (14%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-EP Pentek Undersink Quick-Change Filter System
The Pentek Quick-Change series of filter heads are perfect for any point of use application. The QC10-EP filter head features a fast and simple installation and includes the Pentek QC10-EPR quick change replacement cartridge for chlorine and odor reduction. Ideal for any application where better tasting drinking water is desired.
Our Price: $24.99
Compare At: $27.99
You Save: $3.00 (11%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-CBR-JG14 Pentek Undersink Quick-Change Filter System
The Pentek Quick-Change series of filter heads are perfect for any point of use application. The QC10-CBR-JG14 filter head features a fast and simple installation and includes the Pentek QC10-CBRR quick change replacement cartridge for premium water filtration. Ideal for any application where high quality filtered drinking water is desired.
Our Price: $25.99
Compare At: $28.99
You Save: $3.00 (10%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-GAC Pentek Undersink Quick-Change Filter System
The Pentek Quick-Change series of filter heads are perfect for any point of use application. The QC10-GAC filter head features a fast and simple installation and includes the Pentek QC10-GACR quick change replacement cartridge for chlorine and odor reduction. Ideal for any application where better tasting drinking water is desired.
Our Price: $21.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
P5-478 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 5 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $4.99
Compare At: $5.99
You Save: $1.00 (17%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
PD-5-934 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $5.99
Compare At: $6.99
You Save: $1.00 (14%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
ECP5-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $5.99
Compare At: $6.99
You Save: $1.00 (14%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C2 Pentek Undersink Filter Replacement Cartridge
Fits in compact 5-inch water filter housings.
Our Price: $6.99
Compare At: $7.99
You Save: $1.00 (13%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
C1 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $6.99
Compare At: $7.99
You Save: $1.00 (13%)
This item is currently out of stock.
NCP-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $8.99
Compare At: $9.99
You Save: $1.00 (10%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
EPM-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $6.99
Compare At: $7.99
You Save: $1.00 (13%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
GAC-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $8.99
Compare At: $9.99
You Save: $1.00 (10%)
This item is currently out of stock.
CC-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $9.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CBC-5 Pentek Undersink Filter Replacement Cartridge
Fits in compact 5-inch water filter housings.
Our Price: $10.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CCBC-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $12.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CBR2-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $14.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CBR2-10R Pentek Undersink Filter Replacement Cartridge
Fits PENTEK under-sink filter housings and any housing that uses standard 9 3/4 inch by 2 1/2 inch filter cartridges.
Our Price: $14.99
Compare At: $16.99
You Save: $2.00 (12%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-EPR Pentek Undersink Quick-Change Replacement Filter Cartridge
Fits any PENTEK Quick-Change Series filter heads.
Our Price: $19.49
Compare At: $21.99
You Save: $2.50 (11%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge
Fits any PENTEK Quick-Change Series filter heads.
  • Compatible with 600R, 1000R, 1000R-D, 155785, 155785-43, 155785-51, 155901, 155901-43, 255706-43, 4194338, 4194346, 4194353, 4201661, 750R, 750R-D, QC10… see all part numbers related to the QC10-TSGACR
  • Lasts up to 9 months
  • Removes Chlorine, Bad Taste and Odor, Scale
  • Genuine OEM Filter
Our Price: $15.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
Fits any PENTEK Quick-Change Series filter heads.
  • Compatible with 600R, 1000R, 1000R-D, 155785, 155785-43, 155785-51, 155901, 155901-43, 255706-43, 4194338, 4194346, 4194353, 4201661, 750R, 750R-D, QC10… see all part numbers related to the QC10-GACR
  • Lasts up to 9 months
  • Removes Chlorine, Bad Taste and Odor
  • Genuine OEM Filter
Our Price: $13.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
TSGAC-10 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $16.99
Compare At: $18.99
You Save: $2.00 (11%)
This item is currently out of stock.
QC10-CBRR Pentek Undersink Quick-Change Replacement Filter Cartridge
Fits any PENTEK Quick-Change Series filter heads.
Our Price: $34.99
Compare At: $38.99
You Save: $4.00 (10%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-TSGAC Pentek Undersink Quick-Change Filter System
The Pentek Quick-Change series of filter heads are perfect for any point of use application. The QC10-TSGAC filter head features a fast and simple installation and includes the Pentek QC10-TSGACR quick change replacement cartridge for chlorine, taste and odor. and scale reduction to protect your valuable appliances. Ideal for any application where better tasting drinking water is desired.
Our Price: $22.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
CRE-1 Pentek Undersink Filter Replacement Cartridge
Fits any standard housing that uses 9 3/4 inch x 2 1/2 inch replacement filter cartridges.
Our Price: $21.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-CB1 Pentek Undersink Quick-Change Filter System
The Pentek Quick-Change series of filter heads are perfect for any point of use application. The QC10-CB1 filter head features a fast and simple installation and includes the Pentek QC10-CB1R quick change replacement cartridge for premium water filtration. Ideal for any application where better tasting drinking water is desired.
Our Price: $25.99
Compare At: $28.99
You Save: $3.00 (10%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
QC10-CBR-THREADED Pentek Undersink Quick-Change Filter System
The Pentek Quick-Change series of filter heads are perfect for any point of use application. The QC10-CBR male threaded filter head features a fast and simple installation and includes the Pentek QC10-CBRR quick change replacement cartridge for premium water filtration. Ideal for any application where high quality filtered drinking water is desired.
Our Price: $26.99
Compare At: $29.99
You Save: $3.00 (10%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
PCC-1 Pentek Undersink Filter Replacement Cartridge
Fits PENTEK standard water filter housings.
Our Price: $38.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
R30-478 Pentek Undersink Filter Replacement Cartridge
Fits PENTEK housings that use compact 4 7/8 inch x 2 5/8 inch replacement filter cartridges.
Our Price: $7.99
Compare At: $8.99
You Save: $1.00 (11%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
PENTEK-SLIM-PR10-JG38 Pentek Undersink Filter 10 inch Housing
Pentek's Slim Line filter housings are an excellent choice for low-flow applications and when space and compatibility are primary concerns. The PENTEK-SLIM-PR10-JG38 offers a rugged reinforced polypropylene design with outstanding chemical compatibility and is ideal for use in a variety of low-flow applications.
Our Price: $9.99
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal
A101 Aries Undersink Filter Replacement Cartridge
Fits the Gen IV and other Amway and Quixtar Water Treatment Systems.
Our Price: $36.99
Compare At: $41.99
You Save: $5.00 (12%)
In Stock: Yes
DiscountFilterStore accepts Visa, MasterCard, American Express, Discover, and PayPal