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Specialty Replacements
Specialty Replacements are designed for water filtration systems that require more targeted performance than standard cartridges. These filters support RV setups, marine systems, well water treatment, shower filtration, and whole-house units that address specific water concerns. Built to manage issues such as chlorine, sediment, heavy metals, hydrogen sulfide, sulfur, iron, and scale, these solutions help maintain consistent water quality across different environments. Choosing the right replacement keeps your system working as intended and protects your investment over time.
Designed for Specific Water Challenges
Specialty replacement products are engineered for unique applications where standard filters may not deliver enough coverage. Options include KDF and GAC combinations for city or well water, iron and sulfur reduction cartridges, softening resin filters, and multi-stage shower cartridges that balance pH while reducing chlorine. RV and marine replacements focus on taste, odor, and sediment control in compact systems built for mobility. Larger Big Blue sizes support higher flow rates in whole-house installations. Each filter type is made to match compatible housings and system requirements, helping you maintain performance without unnecessary modifications.
Why Choose iFilters for Specialty Replacement Products?
iFilters offers a wide range of specialty replacement products that fit both residential and travel-based filtration systems. Many items are in stock and ready to ship, making routine maintenance simple and predictable. Auto Ship options allow you to stay on schedule without tracking replacement dates manually. Detailed product information helps you select the correct size and media for your system. With dependable inventory and trusted filtration media, iFilters makes it easier to keep advanced water systems operating at their best.
Shop Specialty Replacements online today!
Sale
$15.99
$14.40
The PRO+AQUA FC-9-PF is a dual two-stage filter in one. The first stage filters sediment, dirt, sand, and other particles down to the 5 micron leve...
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$15.99
$14.40
Sale
$54.99
$49.50
KDF1-4510 4.5" x 10" Coconut GAC + 1 LB KDF cartridge. For City or Well Water Whole House or Commercial use. This filter is made from coconut shell...
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$54.99
$49.50
Sale
$28.99
$26.10
KDF85-10 2.5" x 10" Coconut GAC + KDF85 standard size filter cartridge. For Well Water or City Whole House filtration as well as Commercial use. T...
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$28.99
$26.10
Sale
$109.99
$99.00
KDF2-4520 4.5" x 20" Coconut GAC + 2LBS KDF size cartridge. For City or Well Water Whole House or Commercial use. This filter is made from coconut ...
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$109.99
$99.00
Sale
$14.99
$13.50
Not compatible with the Black-Cap Style WS-P-REG-KITV2 Prefilter/Regeneration System.The PRO+AQUA PA-DC is a dual two stage filter in one. The firs...
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$14.99
$13.50
Sale
$89.99
$81.00
KDF85-20B 4.5" x 20" Coconut GAC + KDF85 Big Blue size cartridge. For Well Water or City Whole House filtration as well as Commercial use. This fil...
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$89.99
$81.00
Sale
$129.99
$117.00
KDF85-10B 4.5" x 10" Coconut GAC + KDF85 Big Blue size cartridge. For Well Water or City Whole House filtration as well as Commercial use. This fil...
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$129.99
$117.00
Sale
$49.99
$45.00
The CAT-4520 softening cation resin filter is used for the reduction of hard water using an ion exchange process. The CAT-4520 water softening filt...
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$49.99
$45.00
Sale
$99.99
$90.00
Hydronix Whole House UDF-4520GACKDF2 4.5" x 20" Coconut GAC + 2LBS KDF, Big Blue size cartridge. This filter is made from coconut shell GAC in comb...
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$99.99
$90.00
Sale
$18.32
$16.49
This OEM iFilters replacement cartridge is used in the iFilters IF-SF-CH and IF-SF-WH shower filters as well as other similar shower filters. This ...
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$18.32
$16.49
Sale
$15.35
$13.82
The Hydronix UDF-10KDF.5 is a 2.5" x 10" KDF replacement with 0.5 lbs of KDF media. For use in many water filter systems, especially whole-house fi...
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$15.35
$13.82
Sale
$27.99
$25.20
The iFilters KDF05-10 is a 2.5" x 10" KDF replacement filter with 0.5 lbs of KDF media. For use in many water filter systems, especially point of u...
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$27.99
$25.20
Sale
$6.40
$5.76
The Hydronix UDF-10PF is a dual two stage filter in one. The first stage filters sediment, dirst, sand and other particles down to the 5 micron lev...
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$6.40
$5.76
Sale
$43.66
$39.30
The Hydronix UDF-10KDF2 is a 2.5" x 10" KDF replacement with 2 lbs of KDF media. For use in many water filter systems, especially whole house filte...
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$43.66
$39.30
Sale
$27.48
$24.74
The Hydronix UDF-10KDF1 is a 2.5" x 10" KDF replacement with 1 lbs of KDF media. For use in many water filter systems, especially whole house filte...
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$27.48
$24.74
Sale
$18.96
$17.07
The Hydronix UDF-10C100E Resin Water Softening cartridges are the best choice for your higher flow, water softening needs. Made with NSF certified ...
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$18.96
$17.07
Sale
$255.00
$229.50
This 4.5" x 20" Alkaline cartridge is used to increase pH and neutralize the acidity of low-mineral water. This alkaline filter will improve the ov...
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$255.00
$229.50
Sale
$39.07
$35.17
3 Stage Aquarium Reverse Osmosis RO Replacement Water Filter Set with 100 GPD Membrane. For any standard compact Aquarium RO system with 1/4" tubin...
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$39.07
$35.17
Sale
$125.90
$113.31
Hydronix DI-4520C Deionization Resin TDS Reduction Cartridge – 4.5" x 20" The Hydronix DI-4520C Deionization (DI) Resin Cartridge is designed to re...
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$125.90
$113.31
Sale
$32.95
$29.66
The Hydronix UDF-20C200E Resin Water Softening cartridges are the best choice for your higher flow, water softening needs. Made with NSF certified ...
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$32.95
$29.66
Sale
$341.00
$306.90
Hydronix UDF-10BP-ALK Alkaline pH Water Filter Cartridge – 4.5" x 10" The Hydronix UDF-10BP-ALK Alkaline pH Water Filter Cartridge is designed to e...
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$341.00
$306.90
