Skip to content

Water Filtration System Parts

Reliable System parts keep your water filtration setup running at its best. From small seals to advanced electrical components, each part plays a role in maintaining water flow, pressure control, and filtration accuracy. Over time, wear and tear can affect valves, housings, and fittings, which makes timely replacement important. Choosing compatible components helps extend system life and protect your investment.

About Our System Parts

Our collection includes water softener heads, riser tubes, distributor baskets, pressure gauges, and power adapters designed for filtration and treatment systems. You will also find O-rings for various housing models, reverse osmosis booster pumps, storage tanks, and pressure protection valves. Ultraviolet system ballasts and replacement lamps are available to support disinfection performance. For countertop and under-sink systems, faucet adapters, fittings, and stainless steel connectors offer secure installation. Every component is selected to meet standard sizing and performance needs across many filtration brands.

Each product listing highlights availability, reviews, and compatibility details to help you make confident decisions. With hundreds of parts in stock, finding the right replacement becomes straightforward. Whether you are upgrading a softener valve or replacing a worn gasket, quality components restore proper function.

Why Choose iFilters for System Parts?

iFilters offers a wide selection of system parts backed by consistent inventory and dependable shipping. Clear product descriptions and model references make it easier to match parts with your system. Competitive pricing supports both residential users and professional installers. Customer feedback and ratings add helpful insight before purchase.

Shop system parts online today!

Filters

$
$
Filter Housing 20" For Water Systems & Hydroponics, Blue/Black 3/4" Ports w/PR
Filter Housing 20" For Water Systems & Hydroponics, Blue/Black 3/4" Ports w/PR
Hydronix

Filter Housing 20" For Water Systems & Hydroponics, Blue/Black 3/4" Ports w/PR

HF5-20BLBK34PR
in stock
$40.04 - $40.04
$40.04
$40.04 - $40.04
$40.04

Hydronix HF5-20BLBK34PR (with Pressure Relief Button) Blue Filter Housings are made to house 2.5" x 20” cartridges. Most 2.5" x 20” cartridges fit ...

View full details
$40.04 - $40.04
$40.04
$40.04 - $40.04
$40.04
316 Stainless Steel High Flow Filter Housing, 4.5"x20", 1" Ports - IFilters
HydroScientific

HydroScientific HF4520SS-10 - Stainless Steel High Flow Filter Housing

HF4520SS-10
in stock
$299.94 - $299.94
$299.94
$299.94 - $299.94
$299.94

HydroScientific HF4520SS-10 – Stainless Steel High-Flow Filter Housing The HF4510SS-10 is a durable and reliable stainless steel filter housing des...

View full details
$299.94 - $299.94
$299.94
$299.94 - $299.94
$299.94
Polaris Scientific GLHO58PP – High Output 58W Ultraviolet Germicidal Lamp for UVA-630HO UV System
Polaris Scientific

Polaris Scientific GLHO58PP Ultraviolet Lamp High Output 58W for UVA-630HO UV System

GLHO58PP
in stock
$112.89 - $112.89
$112.89
$112.89 - $112.89
$112.89

Polaris Scientific GLHO58PP – High Output 58W Ultraviolet Germicidal Lamp for UVA-630HO UV System The Polaris Scientific GLHO58PP is an OEM replace...

View full details
$112.89 - $112.89
$112.89
$112.89 - $112.89
$112.89
Hydronix PFM-NUT-12 PFM Replacement Nut, 1/2" MNPT - IFilters
Hydronix PFM-NUT-12 PFM Replacement Nut, 1/2" MNPT - IFilters
Hydronix

Hydronix PFM-NUT-12 PFM Replacement Nut, 1/2" MNPT

PFM-NUT-12
in stock
$4.99 - $4.99
$4.99
$4.99 - $4.99
$4.99

$4.99 - $4.99
$4.99
$4.99 - $4.99
$4.99
Hydronix Modern Ceramic RO or Filtered Water Faucet, Antique Brass - IFilters
Hydronix

Reverse Osmosis Faucet Modern Design, Ceramic, Antique Bronze

LF-EC25-AZ
in stock
$40.50 - $40.50
$40.50
$40.50 - $40.50
$40.50

Hydronix LF-EC25-AZ Ceramic Faucet is a antique bronze faucet that can be used in reverse osmosis and drinking water systems. The LF-EC25-AZ faucet...

View full details
$40.50 - $40.50
$40.50
$40.50 - $40.50
$40.50
Polaris Scientific GL17SE4P – 17W UV Germicidal Replacement Lamp for UV-4C Systems
Polaris Scientific

Polaris Scientific GL17SE4P UV Ultraviolet Replacement Lamp, 17W For UV-4C UV Systems

GL17SE4P
in stock

$23.36 - $23.36
$23.36
$23.36 - $23.36
$23.36

Polaris Scientific GL17SE4P – 17W UV Germicidal Replacement Lamp for UV-4C Systems The Polaris Scientific GL17SE4P is a high-performance ultraviole...

View full details
$23.36 - $23.36
$23.36
$23.36 - $23.36
$23.36
Polaris Scientific Ultraviolet Replacement Quartz Sleeve For UVA-6C UV Systems - IFilters
Polaris Scientific

Polaris Scientific Ultraviolet Replacement Quartz Sleeve For UVA-6C UV Systems

QS24
in stock
$23.23 - $23.23
$23.23
$23.23 - $23.23
$23.23

Polaris Scientific QS24 Replacement Quartz Sleeve for the UVA-6C Ultraviolet UV System. Natural quartz sleeve to protect the lamp and allow the max...

View full details
$23.23 - $23.23
$23.23
$23.23 - $23.23
$23.23
Water Filter Housing, House Commercial Hydroponics Clear BB Size 10", 1.5" Ports
Hydronix

Water Filter Housing, House Commercial Hydroponics Clear BB Size 10", 1.5" Ports

HF45-20CLBK15
in stock
$87.28 - $87.28
$87.28
$87.28 - $87.28
$87.28

The Hydronix HF45-20CLBK15 (Note: Picture shows PR version, this one does not include the PR button) 20" Clear Filter Housing is an extra-wide hous...

View full details
$87.28 - $87.28
$87.28
$87.28 - $87.28
$87.28
Hydronix Long Reach Reverse Osmosis or Filtered Water Faucet, Chrome - IFilters
Hydronix

Hydronix Long Reach Reverse Osmosis or Filtered Water Faucet, Chrome

LF-BLR
in stock
$22.00 - $22.00
$22.00
$22.00 - $22.00
$22.00

Hydronix LF-BLR long REACH faucet is a chrome plated faucet that can be used in reverse Osmosis and Drinking water systems. The LF-BLR faucet featu...

View full details
$22.00 - $22.00
$22.00
$22.00 - $22.00
$22.00
Hydronix 5" Clear Housing w/ White Flat Cap, RO & Filtration Systems 1/2" Ports
Hydronix

Hydronix 5" Clear Housing w/ White Flat Cap, RO & Filtration Systems 1/2" Ports

HF2-5CLWH12
in stock
$19.25 - $19.25
$19.25
$19.25 - $19.25
$19.25

Hydronix HF2 series Slim flat cap Filter housings are ideal for Typical applications as pre- and post-filtration for RO systems, under sink filters...

View full details
$19.25 - $19.25
$19.25
$19.25 - $19.25
$19.25
Hydronix 10" White Housing w/ White Flat Cap, RO & Filtration Systems 1/4" Ports
Hydronix

Hydronix 10" White Housing w/ White Flat Cap, RO & Filtration Systems 1/4" Ports

HF2-10WHWH14
in stock
$17.23 - $17.23
$17.23
$17.23 - $17.23
$17.23

Hydronix HF2 Series Slim Flat Cap Filter Housings are ideal for typical applications as pre- and post-filtration for RO systems, under sink filters...

View full details
$17.23 - $17.23
$17.23
$17.23 - $17.23
$17.23
Hydronix 10" Blue Housing w/ Black Rib Cap, RO & Filtration Systems, 3/4" Ports
Hydronix 10" Blue Housing w/ Black Rib Cap, RO & Filtration Systems, 3/4" Ports
Hydronix

Hydronix 10" Blue Housing w/ Black Rib Cap, RO & Filtration Systems, 3/4" Ports

HF3-10BLBK34
in stock
$17.86 - $17.86
$17.86
$17.86 - $17.86
$17.86

Hydronix HF3 series Slim Rib cap Filter housings have pressure Relief (PR) buttons and are ideal for Typical applications such as pre- and post-fil...

View full details
$17.86 - $17.86
$17.86
$17.86 - $17.86
$17.86
Hydronix PFM-NUT-34 PFM Replacement Nut, 3/4" MNPT for PFM-210, and AFM-216 - IFilters
Hydronix PFM-NUT-34 PFM Replacement Nut, 3/4" MNPT for PFM-210, and AFM-216 - IFilters
Hydronix

Hydronix PFM-NUT-34 PFM Replacement Nut, 3/4" MNPT for PFM-210, and AFM-216

PFM-NUT-34
in stock
$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99

$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99
316 Stainless Steel High Flow Filter Housing, 4.5"x20", 1" Ports - IFilters
HydroScientific

316 Stainless Steel High Flow Filter Housing, 4.5"x20", 1" Ports

HF4520SS316-10
in stock
$436.45 - $436.45
$436.45
$436.45 - $436.45
$436.45

The HF4520SS316-10 is a dependable filter housing suitable for various filtration applications. Constructed from durable 316 stainless steel, it of...

View full details
$436.45 - $436.45
$436.45
$436.45 - $436.45
$436.45
Polaris Scientific QS58HO – Replacement Quartz Sleeve for UVA-630HO High Output UV System
Polaris Scientific

Polaris Scientific QS58HO High Output Ultraviolet Replacement Quatz Sleeve

QS58HO
in stock
$58.20 - $58.20
$58.20
$58.20 - $58.20
$58.20

Polaris Scientific QS58HO – Replacement Quartz Sleeve for UVA-630HO High Output UV System The Polaris Scientific QS58HO is an OEM replacement quart...

View full details
$58.20 - $58.20
$58.20
$58.20 - $58.20
$58.20
BV-1414-MC Brass Valve - IFilters
Hydronix

BV-1414-MC Brass Valve

BV-1414-MC
in stock
$5.75 - $5.75
$5.75
$5.75 - $5.75
$5.75

The Hydrofit Brass Ball Valve Straight is a 1/4" MPT x 1/4" Feed Water Valve

$5.75 - $5.75
$5.75
$5.75 - $5.75
$5.75
Pressure Regulator Protection Valve for RO & Filter Systems, 1/4" QC, 40 PSI
Shok Blok

Pressure Regulator Protection Valve for RO & Filter Systems, 1/4" QC, 125 PSI

SB-FPV-125
in stock
$12.30 - $12.30
$12.30
$12.30 - $12.30
$12.30

Shokblok Filter protection valves are designed for high pressure installations to protect reverse Osmosis systems, water filtration systems, ice ma...

View full details
$12.30 - $12.30
$12.30
$12.30 - $12.30
$12.30
Hydronix HF45-10BLBK34PR Water Filter Housing NSF listed 10" - 3/4" Ports w/ PR
Hydronix HF45-10BLBK34PR Water Filter Housing NSF listed 10" - 3/4" Ports w/ PR
Hydronix

Hydronix HF45-10BLBK34PR Water Filter Housing NSF listed 10" - 3/4" Ports w/ PR

HF45-10BLBK34PR
in stock
$40.19 - $40.19
$40.19
$40.19 - $40.19
$40.19

The Hydronix HF45-10BLBK34PR 10" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. This housing...

View full details
$40.19 - $40.19
$40.19
$40.19 - $40.19
$40.19
Hydronix HF45-10BLBK10 Water Filter Housing NSF listed 10" - 1" Ports
Hydronix

Hydronix HF45-10BLBK10 Water Filter Housing NSF listed 10" - 1" Ports

HF45-10BLBK10
in stock
$39.67 - $39.67
$39.67
$39.67 - $39.67
$39.67

The Hydronix HF45-10BLBK10 10" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. It is made of ...

View full details
$39.67 - $39.67
$39.67
$39.67 - $39.67
$39.67
Hydronix 10" Clear Housing w/ White Flat Cap, RO & Filtration Systems 3/8" Ports
Hydronix 10" Clear Housing w/ White Flat Cap, RO & Filtration Systems 3/8" Ports
Hydronix

Hydronix 10" Clear Housing w/ White Flat Cap, RO & Filtration Systems 3/8" Ports

HF2-10CLWH38
in stock
$18.24 - $18.24
$18.24
$18.24 - $18.24
$18.24

Hydronix HF2 series Slim flat cap Filter housings are ideal for Typical applications as pre- and post-filtration for RO systems, under sink filters...

View full details
$18.24 - $18.24
$18.24
$18.24 - $18.24
$18.24
Hydronix 10" Blue Housing w/ Black Rib Cap, RO & Filtration 3/4" Ports w/ Relief
Hydronix

Hydronix 10" Blue Housing w/ Black Rib Cap, RO & Filtration 3/4" Ports w/ Relief

HF3-10BLBK34PR
in stock
$18.36 - $18.36
$18.36
$18.36 - $18.36
$18.36

Hydronix HF3 series Slim Rib cap Filter housings have pressure Relief (PR) buttons and are ideal for Typical applications such as pre- and post-fil...

View full details
$18.36 - $18.36
$18.36
$18.36 - $18.36
$18.36
Aquatrol AT-0835BK-25T 8 x 35 Pg Pressure Tank - 2.5” T Connection, Standard Base, Black - IFilters
Aquatrol AT-0835BK-25T 8 x 35 Pg Pressure Tank - 2.5” T Connection, Standard Base, Black - IFilters
Aquatrol

Aquatrol AT-0835BK-25T 8 x 35 Pg Pressure Tank - 2.5” T Connection, Standard Base, Black

AT-0835BK-25T
in stock
$91.99 - $91.99
$91.99
$91.99 - $91.99
$91.99

AQUATROL™ PRESSURE TANKS Aquatrol™ Pressure Tanks provide cost-effective reliability for residential and commercial applications. Available in size...

View full details
$91.99 - $91.99
$91.99
$91.99 - $91.99
$91.99
Hydronix SPV-4021-12 Stainless Steel Membrane Housing – 4" x 21", 1/2" Ports
Hydronix

Hydronix SPV-2521 2.5"x21" Stainless Steel Membrane Housing 300 PSI, 3/8" Ports

SPV-2521
in stock
$155.00 - $155.00
$155.00
$155.00 - $155.00
$155.00

Hydronix SPV-2521 Stainless Steel Membrane Housing – 2.5" x 21", 300 PSI, 3/8" Ports The Hydronix SPV-2521 Stainless Steel Membrane Housing is a hi...

View full details
$155.00 - $155.00
$155.00
$155.00 - $155.00
$155.00
PRO+AQUA 3/8in x 5ft Black Brine Tubing - IFilters
PRO+AQUA

PRO+AQUA 3/8in x 5ft Black Brine Tubing

PT06-BK-5
in stock
$8.99 - $8.99
$8.99
$8.99 - $8.99
$8.99

Water softener brine line hose, 5 foot, 3/8". Compatible with most systems that use 3/8" Quick Connect (Push-in) lines. Manufactured to be highly r...

View full details
$8.99 - $8.99
$8.99
$8.99 - $8.99
$8.99
Autoship Popup
{"statementLink":"","footerHtml":"","hideMobile":false,"hideTrigger":false,"disableBgProcess":false,"language":"en","position":"right","leadColor":"#146ff8","triggerColor":"#146ff8","triggerRadius":"50%","triggerPositionX":"right","triggerPositionY":"bottom","triggerIcon":"people","triggerSize":"medium","triggerOffsetX":95,"triggerOffsetY":20,"mobile":{"triggerSize":"small","triggerPositionX":"right","triggerPositionY":"bottom","triggerOffsetX":90,"triggerOffsetY":10,"triggerRadius":"50%"}}